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1. Unveiling the charge distribution of a GaAs-based nanoelectronic device: A large experimental data-set approach

Author

Eleni Chatzikyriakou, Junliang Wang, Lucas Mazzella, Antonio Lacerda-Santos, Maria Cecilia da Silva Figueira, Alex Trellakis, Stefan Birner, Thomas Grange, Christopher Bäuerle, Xavier Waintal, Laboratory of Quantum Theory (GT), PHotonique, ELectronique et Ingénierie QuantiqueS (PHELIQS), Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA)-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA), Circuits électroniques quantiques Alpes (NEEL - QuantECA), Institut Néel (NEEL), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Nextnano GmbH, and Nextnano Lab

Subjects
[PHYS]Physics [physics], [SPI]Engineering Sciences [physics], Condensed Matter - Mesoscale and Nanoscale Physics, Mesoscale and Nanoscale Physics (cond-mat.mes-hall), General Physics and Astronomy, FOS: Physical sciences
Abstract

In quantum nanoelectronics, numerical simulations have become an ubiquitous tool. Yet the comparison with experiments is often done at a qualitative level or restricted to a single device with a handful of fitting parameters. In this work, we assess the predictive power of these simulations by comparing the results of a single model with a large experimental data set of 110 devices with 48 different geometries. The devices are quantum point contacts of various shapes and sizes made with electrostatic gates deposited on top of a high mobility GaAs/GaAlAs two dimensional electron gas. We study the pinch-off voltages applied on the gates to deplete the two-dimensional electron gas in various spatial positions. We argue that the pinch-off voltages are a very robust signature of the charge distribution in the device. The large experimental data set allows us to critically review the modeling and arrive at a robust one-parameter model that can be calibrated in situ, a crucial step for making predictive simulations., 33 pages, 16 figures, journal submission, corrected author name typo, added references, corrected visibility of appendix table, to appear in Physical Review Research

Published
2022
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3. Multiscale in modelling and validation for solar photovoltaics

Author

Witold Jacak, Emmanuel Stratakis, J. C. Rimada, Hele Savin, Efrat Lifshitz, Mimoza Ristova, Mateja Hočevar, Radovan Kopecek, Blas Garrido, M. J. M. Gomes, Mircea Guina, Konstantinos Petridis, Alessio Gagliardi, David Fuertes Marrón, Ivana Capan, Jacky Even, Jaroslav Zadny, Pavel Tománek, V. Donchev, Stefan Birner, Janne Halme, Zoe Amin-Akhlaghi, Fatma Yuksel, Frederic Cortes Juan, Ahmed Neijm, Lejo k. Joseph, Søren Madsen, Abdurrahman Şengül, Marija Drev, Kristian Berland, Jose G. F. Coutinho, Knut Deppert, Diego Alonso-Álvarez, José Silva, Lucjan Jacak, Georg Pucker, Marco Califano, Violetta Gianneta, Nicholas J. Ekins-Daukes, Nikola Bednar, Urs Aeberhard, Shuxia Tao, Spyridon Kassavetis, Rasit Turan, Jelena Radovanović, Katarzyna Kluczyk, Ullrich Steiner, Ivana Savic, Maria E. Messing, Victor Neto, Stanko Tomić, Neil Beattie, Shengda Wang, Androula G. Nassiopoulou, Antonio Martí Vega, Denis Mencaraglia, M. Sendova-Vassileva, Ákos Nemcsics, Felipe Murphy Armando, Boukje Ehlen, Jean-François Guillemoles, Matthias Auf der Maur, James P. Connolly, Laurent Pedesseau, Clas Persson, Christin David, Lacramioara Popescu, Bostjan Cerne, N. Adamovic, Jean-Louis Lazzari, JM José Maria Ulloa, Urša Opara Krašovec, Irinela Chilibon, Jan Storch, Zoran Jakšić, Antti Tukiainen, Tareq Abu Hamed, Martin Loncaric, Laurentiu Fara, V. Kazukauskas, Jean-Paul Kleider, Javad Zarbakhsh, Dead Sea-Arava Science Center (DSASC), Institut für Energie- und Klimaforschung - Photovoltaik (IEK-5), Forschungszentrum Jülich GmbH | Centre de recherche de Juliers, Helmholtz-Gemeinschaft = Helmholtz Association-Helmholtz-Gemeinschaft = Helmholtz Association, Imperial College London, ZAMSTEC − Science, Technology and Engineering Consulting, Università degli Studi di Roma Tor Vergata [Roma], University of Northumbria at Newcastle [United Kingdom], University of Leeds, Rudjer Boskovic Institute [Zagreb], Laboratoire Génie électrique et électronique de Paris (GeePs), Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Universitat Politècnica de València (UPV), Lund University [Lund], Institut des Fonctions Optiques pour les Technologies de l'informatiON (Institut FOTON), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Centre National de la Recherche Scientifique (CNRS), University Politehnica of Bucharest [Romania] (UPB), Universidad Politécnica de Madrid (UPM), Technische Universität Munchen - Université Technique de Munich [Munich, Allemagne] (TUM), National Center for Scientific Research 'Demokritos' (NCSR), Centre of Physics of the University of Minho (CFUM), Institut de Recherche et Développement sur l'Energie Photovoltaïque (IRDEP), Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-EDF R&D (EDF R&D), EDF (EDF)-EDF (EDF), Tampere University of Technology [Tampere] (TUT), Aalto University, University of Ljubljana, Wroclaw University of Science and Technology, University of Belgrade [Belgrade], Aristotle University of Thessaloniki, Vilnius University [Vilnius], Centre Interdisciplinaire de Nanoscience de Marseille (CINaM), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Aarhus University [Aarhus], University College Cork (UCC), Óbuda University [Budapest], Universidade de Aveiro, University of Oslo (UiO), Technological Educational Institute of Crete, Fondazione Bruno Kessler [Trento, Italy] (FBK), University of Havana (Universidad de la Habana) (UH), Ss. Cyril and Methodius University in Skopje (UKIM), Tyndall National Institute [Cork], Zonguldak Bülent Ecevit University (BEU), Universidade de Taubaté (UNITAU), Cavendish Laboratory, University of Cambridge [UK] (CAM), Institute of Chemical Process Fundamentals of the ASCR, Czech Republic, Foundation for Research and Technology - Hellas (FORTH), Eindhoven University of Technology [Eindhoven] (TU/e), Brno University of Technology [Brno] (BUT), University of Salford, Middle East Technical University [Ankara] (METU), Gebze Technical University, Czech Academy of Sciences [Prague] (CAS), Carinthia University of Applied Sciences, MP1406, European Cooperation in Science and Technology, Université Paris-Sud - Paris 11 (UP11)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-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)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), EDF R&D (EDF R&D), EDF (EDF)-EDF (EDF)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC), Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), Ss. Cyril and Methodius University in Skopje, Universidade do Minho, Dead Sea and Arava Science Center, Vienna University of Technology, Forschungszentrum Jülich, University of Rome Tor Vergata, Northumbria University, University of Oslo, nextnano GmbH, Rudjer Boskovic Institute, ZEL-EN d.o.o., National Institute of Research and Development for Optoelectronics, Université Paris-Saclay, Polytechnic University of Valencia, University of Aveiro, Madrid Institute for Advanced Studies in Nanoscience, Lund University, Sofia University St. Kliment Ohridski, Trimo Grp, Boukje.com Consulting, Centre National de la Recherche Scientifique (CNRS), University Politehnica of Bucharest, Technical University of Munich, University of Barcelona, Institute of Nanoscience and Nanotechnology, The University of Tokyo, Tampere University of Technology, Department of Applied Physics, Wrocław University of Science and Technology, University of Belgrade, ISC Konstanz eV, Vilnius University, Aix-Marseille Université, Technion-Israel Institute of Technology, Aarhus University, Polytechnic University of Madrid, University College Cork, Demokritos National Centre for Scientific Research, Silvaco Europe Ltd, Óbuda University, Hellenic Mediterranean University, Fondazione Bruno Kessler, University of Havana, SS Cyril and Methodius University in Skopje, Department of Electronics and Nanoengineering, Bulgarian Academy of Sciences, Bulent Ecevit University, Adolphe Merkle Institute, Czech Academy of Sciences, Foundation for Research and Technology - Hellas, Eindhoven University of Technology, Brno University of Technology, Middle East Technical University, Aalto-yliopisto, Zonguldak Bülent Ecevit Üniversitesi, Center for Computational Energy Research, and Computational Materials Physics

Subjects
Nano structures, lcsh:TJ807-830, Modelling and validation, 02 engineering and technology, semiconductors, 01 natural sciences, 7. Clean energy, Settore ING-INF/01 - Elettronica, Environmental footprints, law.invention, [SPI.MAT]Engineering Sciences [physics]/Materials, Semiconductor materials, WAVE BASIS-SET, law, Photovoltaics, CARRIER MULTIPLICATION, Multi-scale simulation, multi-scale modelling, Telecomunicaciones, COLLOIDAL QUANTUM DOTS, device simulation, NANOMETER-SCALE, Photovoltaic cells, Physics, Photovoltaic system, Nanostructured materials, Renewable energy resources, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Multiscale modeling, Electronic, Optical and Magnetic Materials, Characterization (materials science), Renewable energy, [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, ELECTRONIC-STRUCTURE, SDG 12 – Verantwoordelijke consumptie en productie, Energías Renovables, Physical Sciences, TIGHT-BINDING, Systems engineering, Electrónica, 0210 nano-technology, NEAR-FIELD, solar cells, third generation photovoltaics, nano structures, Solar cells, J500, Ciências Naturais::Ciências Físicas, F300, H600, Third generation photovoltaics, ta221, Renewable energy source, Ciências Físicas [Ciências Naturais], lcsh:Renewable energy sources, GREENS-FUNCTION, Solar power generation, Different length scale, Physics, Applied, OPTICAL-RESPONSE, 0103 physical sciences, Solar cell, SDG 7 - Affordable and Clean Energy, Electrical and Electronic Engineering, 010306 general physics, Device simulations, Ecological footprint, Science & Technology, ta114, Renewable Energy, Sustainability and the Environment, business.industry, TOTAL-ENERGY CALCULATIONS, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Environmental technology, Nanostructures, Multiple exciton generation, 13. Climate action, Conversion efficiency, business, SDG 12 - Responsible Consumption and Production, SDG 7 – Betaalbare en schone energie
Abstract

Photovoltaics is amongst the most important technologies for renewable energy sources, and plays a key role in the development of a society with a smaller environmental footprint. Key parameters for solar cells are their energy conversion efficiency, their operating lifetime, and the cost of the energy obtained from a photovoltaic system compared to other sources. The optimization of these aspects involves the exploitation of new materials and development of novel solar cell concepts and designs. Both theoretical modeling and characterization of such devices require a comprehensive view including all scales from the atomic to the macroscopic and industrial scale. The different length scales of the electronic and optical degrees of freedoms specifically lead to an intrinsic need for multiscale simulation, which is accentuated in many advanced photovoltaics concepts including nanostructured regions. Therefore, multiscale modeling has found particular interest in the photovoltaics community, as a tool to advance the field beyond its current limits. In this article, we review the field of multiscale techniques applied to photovoltaics, and we discuss opportunities and remaining challenges. © T. Abu Hamed et al., published by EDP Sciences, 2018., European Cooperation in Science and Technology: MP1406, The authors are grateful for the financial support by the COST Action MP1406 “MultiscaleSolar.”

Published
2018
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4. Semiconductor-based electron flying qubits: review on recent progress accelerated by numerical modelling

Author

Hermann Edlbauer, Junliang Wang, Thierry Crozes, Pierre Perrier, Seddik Ouacel, Clément Geffroy, Giorgos Georgiou, Eleni Chatzikyriakou, Antonio Lacerda-Santos, Xavier Waintal, D. Christian Glattli, Preden Roulleau, Jayshankar Nath, Masaya Kataoka, Janine Splettstoesser, Matteo Acciai, Maria Cecilia da Silva Figueira, Kemal Öztas, Alex Trellakis, Thomas Grange, Oleg M. Yevtushenko, Stefan Birner, Christopher Bäuerle, Circuits électroniques quantiques Alpes (NEEL - QuantECA), Institut Néel (NEEL), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Nanofabrication (NEEL - Nanofab), Ingénierie Expérimentale (NEEL - ExpE), Laboratory of Quantum Theory (GT), PHotonique, ELectronique et Ingénierie QuantiqueS (PHELIQS), Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA)-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA), Université Paris-Saclay, National Physical Laboratory [Teddington] (NPL), Chalmers University of Technology [Göteborg], Nextnano GmbH, Nextnano Lab, ANR-16-CE30-0015,FullyQuantum,Manipulation tout-quantique de pulses de charges entières et non-entières dans des fils quantiques(2016), and ANR-19-CE47-0005,STEPforQubits,Short TeraHertz electrical pulses for the generation of flying Qubits(2019)

Subjects
electron, engineering, GaAs/AlGaAs based nanodevices, FOS: Physical sciences, fabrication, wave, programming, acoustic, [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], Mesoscale and Nanoscale Physics (cond-mat.mes-hall), surface, Electrical and Electronic Engineering, [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat], numerical calculations, qubit, Quantum Physics, Condensed Matter - Mesoscale and Nanoscale Physics, quantum mechanics, Quantum computers, quantum dot, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Control and Systems Engineering, Electron flying qubits, Modelling quantum nanodevices, Quantum Physics (quant-ph), experimental results
Abstract

The progress of charge manipulation in semiconductor-based nanoscale devices opened up a novel route to realise a flying qubit with a single electron. In the present review, we introduce the concept of these electron flying qubits, discuss their most promising realisations and show how numerical simulations are applicable to accelerate experimental development cycles. Addressing the technological challenges of flying qubits that are currently faced by academia and quantum enterprises, we underline the relevance of interdisciplinary cooperation to move emerging quantum industry forward. The review consists of two main sections: Pathways towards the electron flying qubit: We address three routes of single-electron transport in GaAs-based devices focusing on surface acoustic waves, hot-electron emission from quantum dot pumps and Levitons. For each approach, we discuss latest experimental results and point out how numerical simulations facilitate engineering the electron flying qubit. Numerical modelling of quantum devices: We review the full stack of numerical simulations needed for fabrication of the flying qubits. Choosing appropriate models, examples of basic quantum mechanical simulations are explained in detail. We discuss applications of open-source (KWANT) and the commercial (nextnano) platforms for modelling the flying qubits. The discussion points out the large relevance of software tools to design quantum devices tailored for efficient operation., Comment: 44 pages, 13 figure, this review will be published in Collection on "Quantum Industry" of EPJ Quantum Technology

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5. Short-period scattering-assisted terahertz quantum cascade lasers operating at high temperatures.

Author

Wang L, Lin TT, Wang K, Grange T, Birner S, and Hirayama H

Abstract

Operating at high temperatures in the range of thermoelectric coolers is essential for terahertz quantum cascade lasers to real applications. The use of scattering-assisted injection scheme enables an increase in operating temperature. This concept, however, has not been implemented in a short-period structure consisting of two quantum wells. In this work, based on non-equilibrium Green's function calculations, it emphasizes on the current leakage and parasitic absorption via high-energy states as fundamental limitations in this scheme with short-period. A new design concept employing asymmetric wells composition is proposed to suppress these limitations. A peak gain of 40 cm -1 at 230 K is predicted in the GaAs/AlGaAs semiconductor material system with an emission frequency of 3.5 THz.

Published
2019
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