Anomalous spin Hall effects in Dresselhaus (110) quantum wells

Liu, Ming-Hao and Chang, Ching-Ray (2010) Anomalous spin Hall effects in Dresselhaus (110) quantum wells. PHYSICAL REVIEW B, 82 (15): 155327. ISSN 1098-0121,

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Abstract

Anomalous spin Hall effects that belong to the intrinsic type in Dresselhaus (110) quantum wells are discussed. For the out-of-plane spin component, antisymmetric current-induced spin polarization induces opposite spin Hall accumulation, even though there is no spin-orbit force due to Dresselhaus (110) coupling. A surprising feature of this spin Hall induction is that the spin accumulation sign does not change upon bias reversal. Contribution to the spin Hall accumulation from the spin Hall induction and the spin deviation due to intrinsic spin-orbit force as well as extrinsic spin scattering can be straightforwardly distinguished simply by reversing the bias. For the in-plane component, inclusion of a weak Rashba coupling leads to a new type of S-y intrinsic spin Hall effect solely due to spin-orbit-force-driven spin separation.

Item Type: Article
Uncontrolled Keywords: SEMICONDUCTORS; ELECTRONS; POLARIZATION;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Theroretical Physics
Depositing User: Dr. Gernot Deinzer
Date Deposited: 08 Jul 2020 06:10
Last Modified: 08 Jul 2020 06:10
URI: https://pred.uni-regensburg.de/id/eprint/23995

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