Adagideli, I. and Scheid, M. and Wimmer, M. and Bauer, G. E. W. and Richter, K. (2007) Extracting current-induced spins: spin boundary conditions at narrow Hall contacts. NEW JOURNAL OF PHYSICS, 9: 382. ISSN 1367-2630,
Full text not available from this repository. (Request a copy)Abstract
We consider the possibility to extract spins that are generated by an electric current in a two-dimensional electron gas with Rashba - Dresselhaus spin - orbit interaction ( R2DEG) in the Hall geometry. To this end, we discuss boundary conditions for the spin accumulations between a spin - orbit (SO) coupled region and a contact without SO coupling, i.e. a normal two-dimensional electron gas (2DEG). We demonstrate that in contrast to contacts that extend along the whole sample, a spin accumulation can diffuse into the normal region through finite contacts and be detected by e.g. ferromagnets. For an impedance-matched narrow contact the spin accumulation in the 2DEG is equal to the current induced spin accumulation in the bulk of R2DEG up to a geometry-dependent numerical factor.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | QUANTUM TRANSPORT; ELECTRIC-CURRENT; SEMICONDUCTORS; POLARIZATION; ORIENTATION; SYSTEMS; FIELD; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 01 Dec 2020 12:58 |
| Last Modified: | 01 Dec 2020 12:58 |
| URI: | https://pred.uni-regensburg.de/id/eprint/32063 |
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