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Your search keyword '"Hauet, T."' showing total 729 results
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729 results on '"Hauet, T."'

1. Co/Ni multilayers for spintronics: high spin-polarization and tunable magnetic anisotropy

Author

Andrieu, S., Hauet, T., Gottwald, M., Rajanikanth, A., Calmels, L., Bataille, A. M., Montaigne, F., Mangin, S., Otero, E., Ohresser, P., Fevre, P. Le, Bertran, F., Resta, A., Vlad, A., Coati, A., and Garreau, Y.

Subjects
Condensed Matter - Materials Science
Abstract

In this paper we analyze in details the electronic properties of (Co/Ni) multilayers, a model system for spintronics devices. We use magneto-optical Kerr (MOKE), spin-polarized photoemission spectroscopy (SRPES), x-ray magnetic circular dichroism (XMCD) and anomalous surface diffraction experiments to investigate the electronic properties and perpendicular magnetic anisotropy (PMA) in [Co(x)/Ni(y)] single-crystalline stacks grown by molecular beam epitaxy., Comment: 11 pages, 11 figures, 1 Table

Published
2018
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3. Rapport 21-13. Formation des chirurgiens/des équipes chirurgicales à la chirurgie robot-assistée. État de la situation actuelle. Propositions d’améliorations

Author

Bagot, M., Pion, M., Vuitton, D.A., Bertrand, D., Bonnin, A., Bontoux, D., Boudjema, K., Bringer, J., Caton, J., Charpentier, B., Chays, A., Christmann, D., Couturier, D., Delpech, M., Deugnier, Y., Dubousset, J., Dussaule, J.C., Fabiani, J.N., Gueant, J.L., Hauet, T., Hubert, J., Huriet, C., Lebranchu, Y., Le Gall, J.Y., Legent, F., Levy-Brul, D., Levy, P., Logeais, Y., Loisance, D., Ludes, B., Malafosse, M., Mandarim-De-Lacerda, C., Mantion, G., Marescaux, J., Michot, F., Mornex, R., Ourabah, R., Poitout, D., Queneau, P., Ricco, J.B., Richard, F., de Saint Julien, J., Sassard, J., Stoltz, J.F., Vouhé, P., Tran Ba Huy, P., Delmas, V., and Vouhe, P.

Published
2022
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4. Long range phase coherencein double barrier magnetic tunnel junctions with large thick metallic quantum well

Author

Tao, B. S., Yang, H. X., Zuo, Y. L., Devaux, X., Lengaigne, G., Hehn, M., Lacour, D., Andrieu, S., Chshiev, M., Hauet, T., Montaigne, F., Mangin, S., Han, X. F., and Lu, Y.

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

Double barrier heterostructures are model systems for the study of electron tunneling and discrete energy levels in a quantum well (QW). Until now resonant tunneling phenomena in metallicQW have been observed for limited thicknesses (1-2 nm) under which electron phase coherence is conserved. In the present study we show evidence of QW resonance states in Fe QW up to12 nmthick and at room temperature in fully epitaxial doubleMgAlOxbarrier magnetic tunnel junctions. The electron phase coherence displayed in this QWis of unprecedented quality because ofa homogenous interface phase shift due to the small lattice mismatch at the Fe/MgAlOx interface. The physical understanding of the critical role of interface strain on QW phase coherence will greatly promote the development of the spin-dependent quantum resonant tunneling applications., Comment: 16 pages, 3 figures 1 table

Published
2015
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5. Spin injection at MgB2-superconductor/ferromagnet interface.

Author

Pfaff, C., Petit-Watelot, S., Andrieu, S., Pasquier, L., Ghanbaja, J., Mangin, S., Dumesnil, K., and Hauet, T.

Subjects
SPINTRONICS, THIN films, FERROMAGNETIC resonance, NONVOLATILE memory, BILAYERS (Solid state physics)
Abstract

There is a growing interest in mixing spintronics and superconductivity to develop original energy-efficient nonvolatile memory and logic devices. Research works conducted so far have mostly focused on superconductor with critical temperature Tc lower than 10 K. Here, we report on the growth and characterization of MgB2/Ni80Fe20 and MgB2/Co bilayers, where Tc of the MgB2 layer is of the order of 30 K. Ferromagnetic resonance was undertaken to analyze the spin pumping into MgB2. The larger magnetization at saturation in Co, as compared to Ni80Fe20, induces a smaller spin pumping contribution to the damping when MgB2 is normal. A spin pumping reduction was observed for both bilayers when MgB2 becomes superconductor and is attributed to the opening of the superconducting gap. The present results show that MgB2 thin films could be suitable to implement superconducting spintronic at 30 K, which is not only relevant for future technological development but also relaxes experimental constraints related to low-temperature investigations. [ABSTRACT FROM AUTHOR]

Published
2024
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6. Measurement of magnetization using domain compressibility in CoFeB films with perpendicular anisotropy

Author

Vernier, N., Adam, J. P., Eimer, S., Agnus, G., Devolder, T., Hauet, T., Ockert, B., and Ravelosona, D.

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science
Abstract

We present a method to map the saturation magnetization of soft ultrathin films with perpendicular anisotropy, and we illustrate it to assess the compositional dependence of the magnetization of CoFeB(1 nm)/MgO films. The method relies on the measurement of the dipolar repulsion of parallel domain walls that define a linear domain. The film magnetization is linked to the field compressibility of the domain. The method also yields the minimal distance between two walls before their merging, which sets a practical limit to the storage density in spintronic devices using domain walls as storage entities.

Published
2013
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8. Nonlocal magnon transconductance in extended magnetic insulating films. II. Two-fluid behavior

Author

Kohno, R., primary, An, K., additional, Clot, E., additional, Naletov, V. V., additional, Thiery, N., additional, Vila, L., additional, Schlitz, R., additional, Beaulieu, N., additional, Ben Youssef, J., additional, Anane, A., additional, Cros, V., additional, Merbouche, H., additional, Hauet, T., additional, Demidov, V. E., additional, Demokritov, S. O., additional, de Loubens, G., additional, and Klein, O., additional

Published
2023
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9. Nonlocal magnon transconductance in extended magnetic insulating films. I. Spin diode effect

Author

Kohno, R., primary, An, K., additional, Clot, E., additional, Naletov, V. V., additional, Thiery, N., additional, Vila, L., additional, Schlitz, R., additional, Beaulieu, N., additional, Ben Youssef, J., additional, Anane, A., additional, Cros, V., additional, Merbouche, H., additional, Hauet, T., additional, Demidov, V. E., additional, Demokritov, S. O., additional, de Loubens, G., additional, and Klein, O., additional

Published
2023
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21. Spin-Based Data Storage

Author

Ozatay, O., primary, Hauet, T., additional, Braganca, P.M., additional, Wan, L., additional, Mather, P, additional, Schneider, M.L., additional, and Thiele, J.-U., additional

Published
2016
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41. Effects of warm ischemia combined with cold preservation on the hypoxia-inducible factor 1α pathway in an experimental renal autotransplantation model: Efecto de la isquemia caliente combinada con la conservación en frío sobre la vía de la subunidad α del factor 1 inducible por hipoxia (HIF 1α) en un modelo experimental de autotrasplante renal

Author

Favreau, F., Le Pape, S., Delpech, P. O., Rossard, L., Jayle, C., Billault, C., Goujon, J. M., Thuillier, R., and Hauet, T.

Published
2014

45. Thermally induced magnetic switching in bit-patterned media.

Author

Pfau, B., Günther, C. M., Hauet, T., Eisebitt, S., and Hellwig, O.

Subjects
SPUTTER deposition, SPUTTERING (Physics), MAGNETISM, MAGNETIC anisotropy, MAGNETIC properties
Abstract

We have studied the thermal variation of the switching field of magnetic islands at room temperature. A model bit-pattern media composed of an assembly of islands with 80 nm width was fabricated by sputter deposition onto a pre-patterned substrate. Using direct magnetic-contrast imaging of the islands under applied field, we extract the switching probabilities of individual islands. Based on an analytical model for the thermally activated switching of the islands, we are able to determine the intrinsic magnetic anisotropy of each island and, consequentially, a distribution of anisotropies for the island ensemble investigated. In the distribution, we identify a separated group of islands with a particularly small anisotropy. We attribute this group to islands containing misaligned grains triggering the magnetic reversal. At room temperature and slow field sweep rates, the observed thermal broadening of the switching-field distribution is small compared to the intrinsic broadening. However, we illustrate that thermal fluctuations play a crucial role at high sweep rates by extrapolating our results to technological relevant regimes. [ABSTRACT FROM AUTHOR]

Published
2017
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46. Spin-Based Data Storage

Author

Ozatay, O., primary, Mather, P.G., additional, Thiele, J.-U., additional, Hauet, T., additional, and Braganca, P.M., additional

Published
2011
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