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53. Influence of carrier lifetime on quantum criticality and superconducting T c of (TMTSF) 2 ClO 4

Author

Sedeki, Abdelouahab, Auban-Senzier, Pascale, Yonezawa, Shingo, Bourbonnais, Claude, Jérome, Denis, Laboratoire de Physique des Solides (LPS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), Quantum Material Laboratory, Okayama University, Département de Physique et RQMP, and Université de Sherbrooke (UdeS)

Subjects
[PHYS]Physics [physics], [PHYS.COND.CM-S]Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con], [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat]
Abstract

International audience; This work presents and analyzes electrical resistivity data on the organic superconductor (TMTSF) 2 ClO 4 and their anion-substituted alloys (TMTSF) 2 (ClO 4) 1−x (ReO 4) x along the least conducting c axis. Nonmagnetic disorder introduced by finite size domains of anion ordering on non-Fermi-liquid character of resistivity is investigated near the conditions of quantum criticality taking place at x = 0. The evolution of the T-linear resistivity term with anion disorder shows a limited decrease in contrast with the complete suppression of the critical temperature T c as expected for unconventional superconductivity beyond a threshold value of x. The resulting breakdown of scaling between both quantities is compared to the theoretical predictions of a linearized Boltzmann equation combined to the scaling theory of umklapp scattering in the presence of disorder-induced pair breaking for the carriers. The theory shows that quantum antiferromagnetic fluctuations, which are at the core of unconventional Cooper pairing and inelastic scattering of T-linear resistivity in these systems, are weakly affected by disorder while the phase coherence responsible for a finite T c can be completely suppressed.

Published
2018
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54. Endurance measurements of LixCoO2-based ReRAM cells

Author

Nguyen, Van Son, Mai, Van Huy, Alexandre, Moradpour, Auban-Senzier, Pascale, Pasquier, Claude, Wang, Kang, Rozenberg, Marcelo J., Brun, Nathalie, March, Katia, Albouy, Pierre-Antoine, Giapintzakis, John, Mihailescu, C N, Kyriakides, Evripides, C.M., Orfanidou, Maroutian, Thomas, Agnus, Guillaume, Lecoeur, Philippe, Matzen, Silvia, Aubert, Pascal, Franger, Sylvain, Salot, Raphaël, Alamarguy, David, Chrétien, Pascal, Nukala, Pavan, Dkhil, Brahim, Schneegans, Olivier, Laboratoire Génie électrique et électronique de Paris (GeePs), Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU), Le Quy Don Technical University = Le Quy Don University of Science and Technology, Laboratoire de Physique des Solides (LPS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), University of Cyprus [Nicosia], Centre de Nanosciences et de Nanotechnologies [Orsay] (C2N), Université Paris-Sud - Paris 11 (UP11)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), CEA-Grenoble DRT/LITEN/DEHT/SRGE/LQS, CEA, Laboratoire Structures, Propriétés et Modélisation des solides (SPMS), Institut de Chimie du CNRS (INC)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Le Quy Don Technical University (LQDTU), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), University of Cyprus [Nicosia] (UCY), and Université Paris-Sud - Paris 11 (UP11)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, ComputingMilieux_MISCELLANEOUS, [SPI.MAT]Engineering Sciences [physics]/Materials
Abstract

International audience

Published
2018

55. Magnetic Molecular Conductors Based on Bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF) and the Tris(chlorocyananilato)ferrate(III) Complex

Author

Sahadevan, Suchithra Ashoka, primary, Abhervé, Alexandre, additional, Monni, Noemi, additional, Auban-Senzier, Pascale, additional, Cano, Joan, additional, Lloret, Francesc, additional, Julve, Miguel, additional, Cui, Hengbo, additional, Kato, Reizo, additional, Canadell, Enric, additional, Mercuri, Maria Laura, additional, and Avarvari, Narcis, additional

Published
2019
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58. Chiral EDT-TTF precursors with one stereogenic centre: substituent size modulation of the conducting properties in the (R-EDT-TTF)2PF6 (R = Me or Et) series

Author

Agence Nationale de la Recherche (France), Centre National de la Recherche Scientifique (France), Université d’Angers, Ministerio de Ciencia, Innovación y Universidades (España), Ministerio de Economía y Competitividad (España), Generalitat de Catalunya, Mroweh, Nabil, Auban-Senzier, Pascale, Vanthuyne, Nicolas, Canadell, Enric, Avarvari, Narcis, Agence Nationale de la Recherche (France), Centre National de la Recherche Scientifique (France), Université d’Angers, Ministerio de Ciencia, Innovación y Universidades (España), Ministerio de Economía y Competitividad (España), Generalitat de Catalunya, Mroweh, Nabil, Auban-Senzier, Pascale, Vanthuyne, Nicolas, Canadell, Enric, and Avarvari, Narcis

Abstract

Modulation of the packing of the donors in the solid state and of the conducting behaviour is achieved in chiral radical cation salts based on the mono-alkylated donors methyl-ethylenedithio-tetrathiafulvalene (Me-EDT-TTF 1) and ethyl-ethylenedithio-tetrathiafulvalene (Et-EDT-TTF 2), underlining the paramount role of the number of stereogenic centres and substituent steric hindrance. Both donors have been prepared as racemates and then separated as pure enantiomers by chiral HPLC. Electrocrystallization experiments provided two complete series of crystalline radical cation salts formulated as [(R)-1]2PF6, [(S)-1]2PF6, and [(rac)-1]2PF6 and [(R)-2]2PF6, [(S)-2]2PF6 and [(rac)-2]PF6·(THF), respectively. The mixed valence salts of 1 show metal-like conductivity in the high temperature regime, while the radical cation salts of 2 are semiconductors, with a much higher conductivity for the enantiopure compounds than the racemic one. Tight-binding band structure calculations of the extended Hückel type performed for all the materials explain the observed conducting behaviour and show the differences in the intermolecular interactions triggered by the change of substituent between 1 and 2.

Published
2019

59. Cobalt oxide thin films towards non volatile memory applications

Author

Nguyen, van Son, Mai, van Huy, Alexandre, Moradpour, Auban Senzier, Pascale, Pasquier, Claude, Wang, Kang, Albouy, Pierre-Antoine, Rozenberg, Marcelo, Giapintzakis, John, Mihailescu, C. N., C.M., Orfanidou, Maroutian, Thomas, Lecoeur, Philippe, Agnus, Guillaume, Aubert, Pascal, Franger, Sylvain, Salot, Raphaël, Brun, Nathalie, March, Katia, Alamarguy, David, Chrétien, Pascal, Schneegans, Olivier, Laboratoire Génie électrique et électronique de Paris (GeePs), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Le Quy Don Technical University = Le Quy Don University of Science and Technology, Laboratoire de Physique des Solides (LPS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), University of Cyprus [Nicosia], Centre de Nanosciences et de Nanotechnologies [Orsay] (C2N), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay, Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Département Intégration Hétérogène sur Silicium (DIHS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Université Paris-Sud - Paris 11 (UP11)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Le Quy Don Technical University (LQDTU), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), University of Cyprus [Nicosia] (UCY), and Université Paris-Sud - Paris 11 (UP11)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, ComputingMilieux_MISCELLANEOUS, [SPI.MAT]Engineering Sciences [physics]/Materials
Abstract

International audience

Published
2017

60. Effects of Voltage Pulse Characteristics on some Performance Parameters of LixCoO2-based Resistive Switching Memory Devices

Author

Nguyen, van Son, Mai, van Huy, Alexandre, Moradpour, Auban Senzier, Pascale, Pasquier, Claude, Kang, Wang, Albouy, Pierre-Antoine, Rozenberg, Marcelo, Giapintzakis, John, Mihailescu, C. N., C.M., Orfanidou, Maroutian, Thomas, Lecoeur, Philippe, Agnus, Guillaume, Aubert, Pascal, Franger, Sylvain, Salot, Raphaël, Brun, Nathalie, March, Katia, Alamarguy, David, Chrétien, Pascal, Schneegans, Olivier, Laboratoire Génie électrique et électronique de Paris (GeePs), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Le Quy Don Technical University = Le Quy Don University of Science and Technology, Laboratoire de Physique des Solides (LPS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), University of Cyprus [Nicosia], Centre de Nanosciences et de Nanotechnologies [Orsay] (C2N), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay, Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information (CEA-LETI), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Université Paris-Sud - Paris 11 (UP11)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Le Quy Don Technical University (LQDTU), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), University of Cyprus [Nicosia] (UCY), and Université Paris-Sud - Paris 11 (UP11)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, ComputingMilieux_MISCELLANEOUS, [SPI.MAT]Engineering Sciences [physics]/Materials
Abstract

International audience

Published
2017

61. Étude de la commutation de cellules de mémoires résistives d’oxydes de cobalt par AFM à pointe conductrice

Author

Nguyen, van Son, Mai, van Huy, Alexandre, Moradpour, Auban Senzier, Pascale, Pasquier, Claude, Kang, Wang, Albouy, Pierre-Antoine, Rozenberg, Marcelo, Giapintzakis, John, Mihailescu, C. N., C.M., Orfanidou, Maroutian, Thomas, Lecoeur, Philippe, Agnus, Guillaume, Aubert, Pascal, Franger, Sylvain, Salot, Raphaël, Brun, Nathalie, March, Katia, Alamarguy, David, Chrétien, Pascal, Schneegans, Olivier, Laboratoire Génie électrique et électronique de Paris (GeePs), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Le Quy Don Technical University, Laboratoire de Physique des Solides (LPS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), University of Cyprus [Nicosia], Centre de Nanosciences et de Nanotechnologies [Orsay] (C2N), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay, Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Département Intégration Hétérogène sur Silicium (DIHS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Université Paris-Sud - Paris 11 (UP11)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), University of Cyprus [Nicosia] (UCY), and Université Paris-Sud - Paris 11 (UP11)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, ComputingMilieux_MISCELLANEOUS, [SPI.MAT]Engineering Sciences [physics]/Materials
Abstract

National audience

Published
2017

63. Mixed valence trimers in cation radical salts of TMTTF with the planar bis(6-sulfo-8-quinolato) platinum complex [Pt(qS)2]2−.

Author

Frąckowiak, Arkadiusz, Barszcz, Bolesław, Olejniczak, Iwona, Tomasik, Mikołaj, Jarzyniak, Natalia, Świetlik, Roman, Auban-Senzier, Pascale, Fourmigué, Marc, Jeannin, Olivier, and Camerel, Franck

Subjects
PLATINUM, CHEMICAL bond lengths, RADICAL cations, HYDROGEN bonding, RAMAN spectroscopy, METHYL groups
Abstract

Electrocrystallization of TMTTF (tetramethyltetrathiafulvalene) in the presence of the dianionic [Pt(qS)2]2− platinum complex (qS: 5-sulfo-8-quinolinol) afforded simultaneously two phases. Phase A with isolated dicationic (TMTTF)22+ species is fully insulating and characterized by C–H hydrogen bonds with the anionic sulfonate moieties. Phase B is a mixed valence salt formulated as (TMTTF)3[Pt(qS)2]. It is organized into strongly trimerized chains, with a notably higher conductivity (σRT = 4 × 10−5 S cm−1). The charge distribution within the TMTTF trimers has been evaluated from the intramolecular bond distances, and IR and Raman spectra, converging all to a +0.5/+1/+0.5 motif, which is not modified at lower temperatures. Spectroscopic studies of such trimeric structures are scarce and the doublet (or triplet) structure expected in the IR of trimers is clearly identified here in the EMV-activated ν8(ag) mode associated with the totally symmetric vibration of methyl groups, in relation to the weak C–H⋯O hydrogen bonds between the radical cation and the dianionic [Pt(qS)2]2− platinum complex. [ABSTRACT FROM AUTHOR]

Published
2020
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65. Conducting Anilate-Based Mixed-Valence Fe(II)Fe(III) Coordination Polymer: Small-Polaron Hopping Model for Oxalate-Type Fe(II)Fe(III) 2D Networks

Author

Sahadevan, Suchithra Ashoka, primary, Abhervé, Alexandre, additional, Monni, Noemi, additional, Sáenz de Pipaón, Cristina, additional, Galán-Mascarós, José Ramón, additional, Waerenborgh, João C., additional, Vieira, Bruno J. C., additional, Auban-Senzier, Pascale, additional, Pillet, Sébastien, additional, Bendeif, El-Eulmi, additional, Alemany, Pere, additional, Canadell, Enric, additional, Mercuri, Maria Laura, additional, and Avarvari, Narcis, additional

Published
2018
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67. Direct Evidence of Lithium Ion Migration in Resistive Switching of Lithium Cobalt Oxide Nanobatteries

Author

Nguyen, Van Son, primary, Mai, Van Huy, additional, Auban Senzier, Pascale, additional, Pasquier, Claude, additional, Wang, Kang, additional, Rozenberg, Marcelo J., additional, Brun, Nathalie, additional, March, Katia, additional, Jomard, François, additional, Giapintzakis, John, additional, Mihailescu, Cristian N., additional, Kyriakides, Evripides, additional, Nukala, Pavan, additional, Maroutian, Thomas, additional, Agnus, Guillaume, additional, Lecoeur, Philippe, additional, Matzen, Silvia, additional, Aubert, Pascal, additional, Franger, Sylvain, additional, Salot, Raphaël, additional, Albouy, Pierre‐Antoine, additional, Alamarguy, David, additional, Dkhil, Brahim, additional, Chrétien, Pascal, additional, and Schneegans, Olivier, additional

Published
2018
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70. Conducting Anilate-Based Mixed-Valence Fe(II)Fe(III) Coordination Polymer: Small-Polaron Hopping Model for Oxalate-Type Fe(II)Fe(III) 2D Networks

Author

Centre National de la Recherche Scientifique (France), Université d’Angers, Région des Pays de la Loire, Université de Lorraine (France), Regione Autonoma della Sardegna, Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali, Ministerio de Economía y Competitividad (España), Generalitat de Catalunya, Fundação para a Ciência e a Tecnologia (Portugal), Sahadevan, Suchithra Ashoka, Abhervé, Alexandre, Monni, Noemi, Sáenz de Pipaón, Cristina, Galán-Mascarós, José Ramón, Waerenborgh, Joao C., Vieira, Bruno J. C., Auban-Senzier, Pascale, Pillet, Sébastien, Bendeif, El-Eulmi, Alemany, Pere, Canadell, Enric, Mercuri, Maria Laura, Avarvari, Narcis, Centre National de la Recherche Scientifique (France), Université d’Angers, Région des Pays de la Loire, Université de Lorraine (France), Regione Autonoma della Sardegna, Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali, Ministerio de Economía y Competitividad (España), Generalitat de Catalunya, Fundação para a Ciência e a Tecnologia (Portugal), Sahadevan, Suchithra Ashoka, Abhervé, Alexandre, Monni, Noemi, Sáenz de Pipaón, Cristina, Galán-Mascarós, José Ramón, Waerenborgh, Joao C., Vieira, Bruno J. C., Auban-Senzier, Pascale, Pillet, Sébastien, Bendeif, El-Eulmi, Alemany, Pere, Canadell, Enric, Mercuri, Maria Laura, and Avarvari, Narcis

Abstract

The mixed-valence FeIIFeIII 2D coordination polymer formulated as [TAG][FeIIFeIII(ClCNAn)3]·(solvate) 1 (TAG = tris(amino)-guanidinium, ClCNAn2− = chlorocyanoanilate dianionic ligand) crystallized in the polar trigonal space group P3. In the solid-state structure, determined both at 150 and at 10 K, anionic 2D honeycomb layers [FeIIFeIII(ClCNAn)3]− establish in the ab plane, with an intralayer metal−metal distance of 7.860 Å, alternating with cationic layers of TAG. The similar Fe−O distances suggest electron delocalization and an average oxidation state of +2.5 for each Fe center. The cation imposes its C3 symmetry to the structure and engages in intermolecular N−H···Cl hydrogen bonding with the ligand. Magnetic susceptibility characterization indicates magnetic ordering below 4 K and the presence of a hysteresis loop at 2 K with a coercive field of 60 Oe. Mössbauer measurements are in agreement with the existence of Fe(+2.5) ions at RT and statistic charge localization at 10 K. The compound shows semiconducting behavior with the in-plane conductivity of 2 × 10−3 S/cm, 3 orders of magnitude higher than the perpendicular one. A small-polaron hopping model has been applied to a series of oxalate-type FeIIFeIII 2D coordination polymers, providing a clear explanation on the much higher conductivity of the anilate-based systems than the oxalate ones.

Published
2018

71. Stable Metallic State of a Neutral-Radical Single-Component Conductor at Ambient Pressure

Author

Ministerio de Economía y Competitividad (España), Generalitat de Catalunya, Fonds National de la Recherche Luxembourg, Le Gal, Yann, Roisnel, Thierry, Auban-Senzier, Pascale, Bellec, Nathalie, Íñiguez, Jorge, Canadell, Enric, Lorcy, Dominique, Ministerio de Economía y Competitividad (España), Generalitat de Catalunya, Fonds National de la Recherche Luxembourg, Le Gal, Yann, Roisnel, Thierry, Auban-Senzier, Pascale, Bellec, Nathalie, Íñiguez, Jorge, Canadell, Enric, and Lorcy, Dominique

Abstract

Molecular metals have been essentially obtained with tetrathiafulvalene (TTF)-based precursors, either with multicomponent ionic materials or, in a few instances, with single-component systems. In that respect, gold bis- (dithiolene) complexes, in their neutral radical state, provide a prototype platform toward such single-component conductors. Herein we report the first single-component molecular metal under ambient pressure derived from such Au complexes without any TTF backbone. This complex exhibits a conductivity of 750 S·cm−1 at 300 K up to 3800 S·cm−1 at 4 K. First-principles electronic structure calculations show that the striking stability of the metallic state finds its origin in sizable internal electron transfer from the SOMO-1 to the SOMO of the complex as well as in substantial interstack and interlayer interactions.

Published
2018

72. 3-D coordination polymers based on the tetrathiafulvalenetetracarboxylate (TTF-TC) derivative: synthesis, characterization, and oxidation issues

Author

Nguyen, Thi Le Anh, Demir-Cakan, Rezan, Devic, Thomas, Morcrette, Mathieu, Ahnfeldt, Tim, Auban-Senzier, Pascale, Stock, Norbert, Goncalves, Anne-Marie, Filinchuk, Yaroslav, Tarascon, Jean-Marie, and Ferey, Gerard

Subjects
Chemical synthesis -- Analysis, Oxidation-reduction reaction -- Analysis, Carboxylation -- Analysis, Chemistry
Published
2010

73. Photochromism, Electrical Properties, and Structural Investigations of a Series of Hydrated Methylviologen Halobismuthate Hybrids: Influence of the Anionic Oligomer Size and Iodide Doping on the Photoinduced Properties and on the Dehydration Process

Author

Leblanc, Nicolas, Mercier, Nicolas, Auban-Senzier, Pascale, Bi, Wenhua, and Pasquier, Claude

Subjects
Photochromic materials -- Structure, Photochromic materials -- Electric properties, Iodides -- Structure, Iodides -- Electric properties, Chemistry
Published
2010

74. Influence of electrical pulses on lithium cobalt oxide thin films : memristive behaviour and potential applications

Author

Nguyen, van Son, Mai, van Huy, Moradpour, Alec, Auban-Senzier, Pascale, Pasquier, Claude, Wang, Kang, Albouy, Pierre-Antoine, Rozenberg, Marcelo, Giapintzakis, John, Mihailescu, C. N., C.M., Orfanidou, Svoukis, Efthymios, Maroutian, Thomas, Lecoeur, Philippe, Agnus, Guillaume, Aubert, Pascal, Franger, Sylvain, Salot, Raphaël, March, Katia, Brun, Nathalie, Alamarguy, David, Chrétien, Pascal, Schneegans, Olivier, Laboratoire Génie électrique et électronique de Paris (GeePs), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Intégration des Systèmes et des Technologies (LIST), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire de Physique des Solides (LPS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), University of Cyprus [Nicosia], Institut d'électronique fondamentale (IEF), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), CEA/LITEN/DTNM/LT, Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), University of Cyprus [Nicosia] (UCY), and Université Paris-Sud - Paris 11 (UP11)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, ComputingMilieux_MISCELLANEOUS, [SPI.MAT]Engineering Sciences [physics]/Materials
Abstract

International audience

Published
2016

75. Caractérisations de cellules de mémoires résistives par AFM à pointe conductrice

Author

Nguyen, van Son, Mai, van Huy, Moradpour, Alec, Auban-Senzier, Pascale, Pasquier, Claude, Wang, Kang, Albouy, Pierre-Antoine, Rozenberg, Marcelo, Giapintzakis, John, Mihailescu, C. N., C.M., Orfanidou, Svoukis, Efthymios, Maroutian, Thomas, Lecoeur, Philippe, Agnus, Guillaume, Aubert, Pascal, Franger, Sylvain, Salot, Raphaël, March, Katia, Brun, Nathalie, Alamarguy, David, Chrétien, Pascal, Schneegans, Olivier, Laboratoire Génie électrique et électronique de Paris (GeePs), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Intégration des Systèmes et des Technologies (LIST), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire de Physique des Solides (LPS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), University of Cyprus [Nicosia], Institut d'électronique fondamentale (IEF), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), CEA/LITEN/DTNM/LT, Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), University of Cyprus [Nicosia] (UCY), and Université Paris-Sud - Paris 11 (UP11)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, ComputingMilieux_MISCELLANEOUS, [SPI.MAT]Engineering Sciences [physics]/Materials
Abstract

National audience

Published
2016

76. A single-component molecular metal based on a thiazole dithiolate gold complex

Author

Tenn, Nadine, Bellec, Nathalie, Jeannin, Olivier, Piekara-Sady, Lidia, Auban-Senzier, Pascale, Iniguez, Jorge, Canade, Enric, and Lorcy, Dominique

Subjects
Density functionals -- Usage, Diazo compounds -- Chemical properties, Diazo compounds -- Electric properties, Gold -- Chemical properties, Gold -- Electric properties, Organometallic compounds -- Structure, Organometallic compounds -- Chemical properties, Organometallic compounds -- Electric properties, Chemistry
Abstract

A single component molecular conductor is isolated from electrocrystallization of the monoanionic gold bis(dithiolene) complex based on the N-ethyl-1,3-thiazoline-2-thione-4,5-dithiolate (Et-thiazdt) ligand. First-principles density functional theory (DFT) calculations have shown that the ground state is antiferromagnetic with a very small band gap.

Published
2009

77. Modulating the framework negative charge density in the system [BDT-TT[P.sup..+]]/[[Re.sub.6][S.sub.5][Cl.sub.9.sup.1-]]/[[Re.sub.6][(S/Se).sub.6][Cl.sub.8.sup.2-]]/[[Re.sub.6][S.sub.7][Cl.sub.7.sup.3-]]: templating by isosteric cluster anions of identical symmetry and shape, variations of incommensurate band filling, and electronic structure in 2D metals

Author

Perruchas, Sandrine, Boubekeur, Kamal, Canadell, Enric, Misaki, Yohji, Auban-Senzier, Pascale, Pasquier, Claude, and Batail, Patrick

Subjects
Organometallic compounds -- Structure, Organometallic compounds -- Chemical properties, Organometallic compounds -- Electric properties, Stoichiometry -- Analysis, Crystals -- Structure, Crystals -- Analysis, X-rays -- Diffraction, X-rays -- Usage, Chemistry
Abstract

A series of two dimensional (2D) metals is shown to have one single [beta]-slab layered topology despite successive increases of the cluster anion negative charge. The BDT-TTP salts have provided a series of materials with strongly related but slightly different Fermi surfaces.

Published
2008

79. Chiral molecular metals: Syntheses, structures, and properties of the AsF(sub 6)(super -) salts of racemic (plusmn)-, (R)-, and (S)-tetrathiafulvalene-oxazoline derivatives

Author

Rethore, Celine, Avarvari, Narcis, Canadell, Enric, Auban-Senzier, Pascale, and Fourmigue, Marc

Subjects
Racemization -- Analysis, Salts -- Chemical properties, Salts -- Research, Oxazoles -- Chemical properties, Oxazoles -- Research, Chemistry
Abstract

A first complete series of racemic and enantiopure conducting salts are synthesized and characterized with metallic character, based on chiral oxazolines. Despite strongly related crystalline and electronic structures, the higher conductivity of pure enantiomers, lacking the disorder inherent to racemic mixture, demonstrates that the chiral donor route is very promising for the elaboration of other metallic salts.

Published
2005

82. Approaching the limit of CuII/CuImixed valency in a CuIBr2–N-methylquinoxalinium hybrid compound

Author

Leblanc, Nicolas, Sproules, Stephen, Pasquier, Claude, Auban-Senzier, Pascale, Raffy, Helene, and Powell, Annie K.

Abstract

A novel 1D hybrid salt (MQ)[CuBr2]∞ (MQ = N-methylquinoxalinium) is reported. Structural, spectroscopic and magnetic investigations reveal a minimal CuII doping of less than 0.1%. However it is not possible to distinguish CuI and CuII. The unusually close packing of the organic moieties and the dark brown colour of the crystals suggest a defect electronic structure.

Published
2015

83. Singular crystalline beta-layered topologies directed by ribbons of self-complementary amide...amide ring motifs in [EDT-TTF-(CONH2)2]2X (X = HSO(sub 4)(super -1), ClO(sub 4)(super -1), ReO(sub 4)(super -1), AsF(sub 6)(super -1)): coupled activation of ribbon curvature, electron interactions, and magnetic susceptibility

Author

Baudron, Stephane A., Avarvari, Narcis, Batail, Patrick, Coulon, Claude, Clerac, Rodolphe, Canadell, Enric, and Auban-Senzier, Pascale

Subjects
Radicals (Chemistry) -- Research, Hydrogen bonding -- Research, Chlorine oxides -- Chemical properties, Chemistry
Abstract

The deliberate design of a series of single crystals for conducting two-dimensional radical cation salts of o-bis(amide)-appended ethylenedithiotetrathiafulvalene, beta'-[EDT-TTF-(CONH2)2]2X (X = HSO(sub 4)(super -1), ClO(sub 4)(super -1), ReO(sub 4)(super -1)or AsF(sub 6)(super -1) and of their parent monocomponent solid EDT-TTF-(CONH2)2 is discussed. A recurrent, puckered ribbon constructed out of self-complementary, hydrogen-bonded amide...amide ring motifs is an important design element.

Published
2003

85. Chiral EDT-TTF precursors with one stereogenic centre: substituent size modulation of the conducting properties in the (R-EDT-TTF)2PF6 (R = Me or Et) series.

Author

Mroweh, Nabil, Auban-Senzier, Pascale, Vanthuyne, Nicolas, Canadell, Enric, and Avarvari, Narcis

Abstract

Modulation of the packing of the donors in the solid state and of the conducting behaviour is achieved in chiral radical cation salts based on the mono-alkylated donors methyl-ethylenedithio-tetrathiafulvalene (Me-EDT-TTF 1) and ethyl-ethylenedithio-tetrathiafulvalene (Et-EDT-TTF 2), underlining the paramount role of the number of stereogenic centres and substituent steric hindrance. Both donors have been prepared as racemates and then separated as pure enantiomers by chiral HPLC. Electrocrystallization experiments provided two complete series of crystalline radical cation salts formulated as [(R)-1]2PF6, [(S)-1]2PF6, and [(rac)-1]2PF6 and [(R)-2]2PF6, [(S)-2]2PF6 and [(rac)-2]PF6·(THF), respectively. The mixed valence salts of 1 show metal-like conductivity in the high temperature regime, while the radical cation salts of 2 are semiconductors, with a much higher conductivity for the enantiopure compounds than the racemic one. Tight-binding band structure calculations of the extended Hückel type performed for all the materials explain the observed conducting behaviour and show the differences in the intermolecular interactions triggered by the change of substituent between 1 and 2. [ABSTRACT FROM AUTHOR]

Published
2019
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86. Resistive Switching Phenomena in LixCoO2 Thin Films

Author

Mai, Van Huy, Moradpour, Alec, Auban-Senzier, Pascale, Pasquier, C. R., Wang, Kang, J. Rozenberg, M., Giapintzakis, John, Mihailescu, I.N., C.M., Orfanidou, Svoukis, Efthymios, Breza, A., Lioutas, C. B., Franger, Sylvain, Revcolevschi, Alexandre, Maroutian, Thomas, Lecoeur, P., Aubert, Pascal, Agnus, Guillaume, Salot, Raphaël, Weil, Raphaël, Alamarguy, David, March, K., Jomard, François, Chrétien, Pascal, Schneegans, Olivier, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des Solides (LPS), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Beijing Normal University (BNU), Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Sud - Paris 11 (UP11)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut d'électronique fondamentale (IEF), Groupe d'Etude de la Matière Condensée (GEMAC), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)

Subjects
[PHYS]Physics [physics], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2014

87. Modifications des propriétés électriques de films minces de LixCoO2 par AFM à pointe conductrice

Author

Moradpour, Alec, Schneegans, Olivier, Auban-Senzier, Pascale, Pasquier, Claude, Wang, Kang, Franger, Sylvain, Revcolevschi, Alexandre, Svoukis, Efthymios, Giapintzakis, John, Lecoeur, Philippe, Aubert, Pascal, Agnus, Guillaume, Maroutian, Thomas, Salot, Raphaël, Chrétien, Pascal, Mai, van Huy, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des Solides (LPS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Institut d'électronique fondamentale (IEF), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS]Physics [physics], ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS, InformationSystems_MISCELLANEOUS, ComputingMilieux_MISCELLANEOUS
Abstract

LGEP 2014 ID = 1522; International audience

Published
2014

88. Correlating conduction properties with the molecular symmetry: segregation of Z and E isomers in the charge-assisted, halogen-bonded cocrystal [(Z,E)-Me2I2TTF]2Br

Author

Ministerio de Economía y Competitividad (España), Generalitat de Catalunya, Agence Nationale de la Recherche (France), Jeannin, Olivier, Canadell, Enric, Auban-Senzier, Pascale, Fourmigué, Marc, Ministerio de Economía y Competitividad (España), Generalitat de Catalunya, Agence Nationale de la Recherche (France), Jeannin, Olivier, Canadell, Enric, Auban-Senzier, Pascale, and Fourmigué, Marc

Abstract

The Z and E isomers of the iodinated TTF derivative (Z,E)-Me2I2-TTF co-crystallize in a mixed-valence salt with Br anions, and are segregated into Z and E stacks, each of them with a different charge localization pattern, which also revealed charge-assisted halogen bonding.

Published
2016

89. Anion size control of the packing in the metallic versus semiconducting chiral radical cation salts (DM-EDT-TTF)2XF6 (X = P, As, Sb)

Author

Agence Nationale de la Recherche (France), Centre National de la Recherche Scientifique (France), Université d’Angers, Ministerio de Economía y Competitividad (España), Pop, Flavia, Auban-Senzier, Pascale, Canadell, Enric, Avarvari, Narcis, Agence Nationale de la Recherche (France), Centre National de la Recherche Scientifique (France), Université d’Angers, Ministerio de Economía y Competitividad (España), Pop, Flavia, Auban-Senzier, Pascale, Canadell, Enric, and Avarvari, Narcis

Abstract

Control of the structural type in metallic enantiopure and racemic radical cation salts is achieved through hydrogen bonding interactions between the chiral donor DM-EDT-TTF and the XF6 anions (X = P, As, Sb), determined by the anion size and the chiral information.

Published
2016

90. Single-Component Conductors: A Sturdy Electronic Structure Generated by Bulky Substituents

Author

Agence Nationale de la Recherche (France), Ministerio de Economía y Competitividad (España), Generalitat de Catalunya, Filatre-Furcate, Agathe, Bellec, Nathalie, Jeannin, Olivier, Auban-Senzier, Pascale, Fourmigué, Marc, Íñiguez, Jorge, Canadell, Enric, Brière, Benjamin, Ta Phuoc, Vinh, Lorcy, Dominique, Agence Nationale de la Recherche (France), Ministerio de Economía y Competitividad (España), Generalitat de Catalunya, Filatre-Furcate, Agathe, Bellec, Nathalie, Jeannin, Olivier, Auban-Senzier, Pascale, Fourmigué, Marc, Íñiguez, Jorge, Canadell, Enric, Brière, Benjamin, Ta Phuoc, Vinh, and Lorcy, Dominique

Published
2016

91. Localization versus delocalization in chiral single component conductors of gold bis(dithiolene) complexes

Author

Agence Nationale de la Recherche (France), Région des Pays de la Loire, Centre National de la Recherche Scientifique (France), Université de Bordeaux, Conseil régional d'Aquitaine, Ministerio de Economía y Competitividad (España), Generalitat de Catalunya, Branzea, Diana G., Pop, Flavia, Auban-Senzier, Pascale, Clérac, Rodolphe, Alemany, Pere, Canadell, Enric, Avarvari, Narcis, Agence Nationale de la Recherche (France), Région des Pays de la Loire, Centre National de la Recherche Scientifique (France), Université de Bordeaux, Conseil régional d'Aquitaine, Ministerio de Economía y Competitividad (España), Generalitat de Catalunya, Branzea, Diana G., Pop, Flavia, Auban-Senzier, Pascale, Clérac, Rodolphe, Alemany, Pere, Canadell, Enric, and Avarvari, Narcis

Abstract

The first examples of chiral single component conductors are reported. Both (S,S) and (R,R) enantiomers of 5,6-dimethyl-5,6-dihydro-1,4-dithiin-2,3-dithiolate (dm-dddt) ligand have been used to prepare anionic metal bis(dithiolene) complexes formulated as ([(n-Bu)4N][M(dm-dddt)2] (M = Au, Ni), which are isostructural according to single crystal X-ray analysis. Single crystal transport measurements indicate semiconducting behavior for the anionic radical Ni complexes, with low room temperature conductivity values and high activation energies. Electrocrystallization experiments provided neutral [M(dm-dddt)2] (M = Au, Ni) complexes. The neutral radical gold compounds show intermolecular S···S interactions in the solid state giving rise to layers interconnected through weak C–H···S hydrogen bonds. The most peculiar structural feature concerns a dissymmetry between the two dithiolene moieties, while the nickel counterpart is symmetric. Single crystal resistivity measurements show thermally activated behavior for the open-shell gold complexes, with room temperature conductivity values of 0.02–0.04 S·cm–1 and activation energies strongly influenced by hydrostatic pressure. A thorough theoretical study on nickel anion radical and gold neutral radical bis(dithiolene) complexes applied to the chiral complexes [M(dm-dddt)2] (M = Au, Ni–) and to a series of previously reported compounds addressed the issue of symmetry versus asymmetry from an electronic coupling perspective between the two dithiolene ligands. It results that neutral gold complexes with dithiolene ligands without extended delocalization are Class II mixed-valent compounds in the Robin and Day classification, presenting an inherent tendency toward asymmetric structures, which can be however modulated by the intermolecular organization in the solid state.

Published
2016

94. Charge-assisted halogen bonding: donor-acceptor complexes with variable ionicity

Author

Lieffrig, Julien, Jeannin, Olivier, Fra, Arkadiusz, Frackowiak, Arkadiusz, Olejniczak, Iwona, Wietlik, Roman, Dahaoui, Slimane, Aubert, Emmanuel, Espinosa, Enrique, Auban-Senzier, Pascale, Fourmigué, Marc, Institut des Sciences Chimiques de Rennes (ISCR), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), Department of Biomedical Sciences and Biotechnology, University of Brescia, Institute of Molecular Physics, Polska Akademia Nauk = Polish Academy of Sciences (PAN), Cristallographie, Résonance Magnétique et Modélisations (CRM2), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des Solides (LPS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Inorganic chemistry, Ionic bonding, 010402 general chemistry, Crystal engineering, conducting materials, 01 natural sciences, Catalysis, noncovalent interactions, chemistry.chemical_compound, Non-covalent interactions, Isostructural, donor–acceptor systems, chemistry.chemical_classification, Halogen bond, [CHIM.ORGA]Chemical Sciences/Organic chemistry, 010405 organic chemistry, Organic Chemistry, charge transfer, General Chemistry, Tetracyanoquinodimethane, Acceptor, 0104 chemical sciences, Crystallography, chemistry, crystal engineering, halogen bonding, Tetrathiafulvalene
Abstract

Charge-assisted halogen bonding is unambiguously revealed from structural and electronic investigations of a series of isostructural charge-transfer complexes derived from iodinated tetrathiafulvalene and tetracyanoquinodimethane derivatives, (EDT-TTFI2)2(TCNQF(n)), n=0-2, which exhibit variable degrees of ionicity. The iodinated tetrathiafulvalene derivative, EDT-TTFI2, associates with tetracyanoquinodimethane (TCNQ) and its derivatives of increasing reduction potential (TCNQF, TCNQF2) through highly directional C-I⋅⋅⋅N≡C halogen-bond interactions. With the less oxidizing TCNQ acceptor, a neutral and insulating charge-transfer complex is isolated whereas with the more oxidizing TCNQF2 acceptor, an ionic, highly conducting charge-transfer salt is found, both of 2:1 stoichiometry and isostructural with the intermediate TCNQF complex, in which a neutral-ionic conversion takes place upon cooling. A correlation between the degree of charge transfer and the C-I⋅⋅⋅N≡C halogen-bond strength is established from the comparison of the structures of the three isostructural complexes at temperatures from 300 to 20 K, thus demonstrating the importance of electrostatics in the halogen-bonding interaction. The neutral-ionic conversion in (EDT-TTFI2)2(TCNQF) is further investigated through the temperature dependence of its magnetic susceptibility and the stretching modes of the C≡N groups.

Published
2013
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95. Commutation résistive de films minces de LixCoO2: Spécificité du comportement de l'AFM à pointe conductrice

Author

Mai, Van Huy, Moradpour, Alec, Schneegans, Olivier, Auban-Senzier, Pascale, Pasquier, Claude, Wang, Kang, Franger, Sylvain, Revcolevschi, Alexandre, Svoukis, Efthymios, Giapintzakis, John, Lecoeur, Philippe, Aubert, Pascal, Agnus, Guillaume, Maroutian, Thomas, Salot, Raphaël, Chrétien, Pascal, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), CE - Equipe Contacts Electriques, and Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)

Subjects
ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2013

97. Coexistence of Dirac and massive carriers in alpha-(BEDT-TTF)(2)I-3 under hydrostatic pressure

Author

Monteverde, Miguel, Goerbig, M., Auban-Senzier, Pascale, Navarin, Fabien, Henck, H., Pasquier, Claude, Mézière, Cécile, Batail, Patrick, MOLTECH-Anjou, and Université d'Angers (UA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
topological insulators, graphene, magnetic-field, [CHIM]Chemical Sciences, galvanomagnetic properties, hgte, mobility
Abstract

International audience; Transport measurements were performed on the organic layered compound alpha-(BEDT-TTF)(2)I-3 under hydrostatic pressure. The carrier types, densities, and mobilities are determined from the magnetoconductance of alpha-(BEDT-TTF)(2)I-3. While evidence of high-mobility massless Dirac carriers has already been given, we report here their coexistence with low-mobility massive holes. This coexistence seems robust as it has been found up to the highest studied pressure. Our results are in agreement with recent DFT calculations of the band structure of this system under hydrostatic pressure. A comparison with graphene Dirac carriers has also been done.

Published
2013
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98. Resistive switching phenomena in LixCoO2 thin films

Author

Schneegans, Olivier, Mai, van Huy, Moradpour, Alec, Auban-Senzier, Pascale, Pasquier, Claude, Wang, Kang, Franger, Sylvain, Revcolevschi, Alexandre, Svoukis, Efthymios, Giapintzakis, John, Lecoeur, Philippe, Aubert, Pascal, Agnus, Guillaume, Maroutian, Thomas, Salot, R., Chrétien, Pascal, CE - Equipe Contacts Electriques, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)

Subjects
ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2012

99. Synthesis and Physical Properties of Purely Organic BEDT-TTF-Based Conductors Containing Hetero-/Homosubstituted Cl/CN-Anilate Derivatives

Author

Ashoka Sahadevan, Suchithra, Monni, Noemi, Abhervé, Alexandre, Auban-Senzier, Pascale, Canadell, Enric, Mercuri, Maria Laura, and Avarvari, Narcis

Abstract

Radical cation salts composed of a bis(ethylenedithio)tetrathiafulvalene (ET) donor with homo-/heterosubstituted Cl/CN anilic acids as purely organic molecular conducting materials formulated as [BEDT-TTF]2[HClCNAn] (1) and [BEDT-TTF][HCl2An] (2) have been prepared by electrocrystallization. Compounds 1and 2crystallized in the monoclinic space group P2/cfor 1and I2/afor 2, showing segregated donor-anion layers arranged in a α′-type donor packing pattern (1) and twisted parallel columns (2), respectively. Single-crystal conductivity measurements show that 1is a semiconductor with room-temperature conductivity of 10–2S cm–1and an activation energy Eaof 1900 K.

Published
2024
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100. Molecular Alloys of Neutral Gold/Nickel Dithiolene Complexes in Single-Component Semiconductors

Author

Mebrouk, Kenny, Kaddour, Wafa, Auban-Senzier, Pascale, Pasquier, Claude, Jeannin, Olivier, Camerel, Franck, and Fourmigué, Marc

Abstract

Control of band filling or doping of molecular (semi)conductors can be performed by substitutional insertion of molecules with a similar shape but a different electron count, with one more or one less electron. This strategy has been explored here within the semiconducting, single-component, radical gold dithiolene complex [AuOC4] bearing para-butoxyphenyl substituents. Alloying with the corresponding neutral nickel dithiolene complex [NiOC4] lacking one electron afforded a complete isostructural series [NiOC4]1–x[AuOC4]x, spanning the whole composition range from x= 0 to x= 1 by 0.1 increments, further characterized by X-ray diffraction and EDX analyses. Magnetic susceptibility data confirm the antiferromagnetic interactions between neighboring radical gold dithiolene complexes. The electrical conductivity increases exponentially with the xgold fraction, while the activation energy remains constant in the more conducting, gold-rich samples. This behavior is tentatively assigned to the tunneling barriers of variable width (with x) but of constant height, separating more conducting gold-rich segments. Comparison of redox potentials for the 1e–oxidation and reduction of both [NiOC4] and [AuOC4] dithiolene complexes indicates that the [NiOC4] nickel complex does not act as a dopant for the radical [AuOC4] complex.

Published
2024
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