Strong spin-orbit interactions and weak ...
Document type :
Compte-rendu et recension critique d'ouvrage
Title :
Strong spin-orbit interactions and weak antilocalization in carbon-doped p-type GaAs/AlxGa1−xAs heterostructures
Author(s) :
Grbic, B. [Auteur]
Laboratory for Solid State Physics [ETH Zürich]
Leturcq, R. [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Laboratory for Solid State Physics [ETH Zürich]
Ihn, T. [Auteur]
Laboratory for Solid State Physics [ETH Zürich]
Ensslin, K. [Auteur]
Laboratory for Solid State Physics [ETH Zürich]
Reuter, D. [Auteur]
Ruhr University Bochum = Ruhr-Universität Bochum [RUB]
Wieck, A.D. [Auteur]
Ruhr University Bochum = Ruhr-Universität Bochum [RUB]
Laboratory for Solid State Physics [ETH Zürich]
Leturcq, R. [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Laboratory for Solid State Physics [ETH Zürich]
Ihn, T. [Auteur]
Laboratory for Solid State Physics [ETH Zürich]
Ensslin, K. [Auteur]
Laboratory for Solid State Physics [ETH Zürich]
Reuter, D. [Auteur]
Ruhr University Bochum = Ruhr-Universität Bochum [RUB]
Wieck, A.D. [Auteur]
Ruhr University Bochum = Ruhr-Universität Bochum [RUB]
Journal title :
Physical Review B: Condensed Matter and Materials Physics (1998-2015)
Pages :
125312
Publisher :
American Physical Society
Publication date :
2008
ISSN :
1098-0121
HAL domain(s) :
Physique [physics]/Matière Condensée [cond-mat]
English abstract : [en]
We present a comprehensive study of the low-field magnetoresistance in carbon doped p-type GaAs/AlGaAs heterostructures aiming at the investigation of spin–orbit interaction effects. The following signatures of exceptionally ...
Show more >We present a comprehensive study of the low-field magnetoresistance in carbon doped p-type GaAs/AlGaAs heterostructures aiming at the investigation of spin–orbit interaction effects. The following signatures of exceptionally strong spin-orbit interactions are simultaneously observed: abeating in the Shubnikov-de Haas oscillations, a classical positive magnetoresistance due to the presence of the two spin-split subbands, and a weak anti-localization dip in the magnetoresistance. The spin-orbit induced splitting of the heavy hole subband at the Fermi level is determined to bearound 30 % of the total Fermi energy. The phase coherence length of holes of around 2.5 µm at a temperature of 70 mK, extracted from weak anti-localization measurements, is promissing for the fabrication of phase-coherent p-type nanodevicesShow less >
Show more >We present a comprehensive study of the low-field magnetoresistance in carbon doped p-type GaAs/AlGaAs heterostructures aiming at the investigation of spin–orbit interaction effects. The following signatures of exceptionally strong spin-orbit interactions are simultaneously observed: abeating in the Shubnikov-de Haas oscillations, a classical positive magnetoresistance due to the presence of the two spin-split subbands, and a weak anti-localization dip in the magnetoresistance. The spin-orbit induced splitting of the heavy hole subband at the Fermi level is determined to bearound 30 % of the total Fermi energy. The phase coherence length of holes of around 2.5 µm at a temperature of 70 mK, extracted from weak anti-localization measurements, is promissing for the fabrication of phase-coherent p-type nanodevicesShow less >
Language :
Anglais
Popular science :
Non
Source :
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