Bernardes, Esmerindo and Schliemann, John and Lee, Minchul and Egues, J. Carlos and Loss, Daniel (2007) Spin-orbit interaction in symmetric wells with two subbands. PHYSICAL REVIEW LETTERS, 99 (7): 076603. ISSN 0031-9007,
Full text not available from this repository.Abstract
We investigate the spin-orbit (SO) interaction in two-dimensional electron gases in quantum wells with two subbands. From the 8x8 Kane model, we derive a new intersubband-induced SO term which resembles the functional form of the Rashba SO but is nonzero even in symmetric structures. This follows from the distinct parity of the confined states (even or odd) which obliterates the need for asymmetric potentials. We self-consistently calculate the new SO coupling strength for realistic wells and find it comparable to the usual Rashba constant. Our new SO term gives rise to a nonzero ballistic spin-Hall conductivity, which changes sign as a function of the Fermi energy (epsilon(F)) and can induce an unusual Zitterbewegung with cycloidal trajectories without magnetic fields.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | TWO-DIMENSIONAL ELECTRONS; QUANTUM-WELLS; BAND-STRUCTURE; HETEROSTRUCTURE; SEMICONDUCTORS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Grifoni > Group John Schliemann |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 01 Dec 2020 13:59 |
| Last Modified: | 01 Dec 2020 13:59 |
| URI: | https://pred.uni-regensburg.de/id/eprint/32381 |
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