Kurpas, Marcin and Gmitra, Martin and Fabian, Jaroslav (2016) Spin-orbit coupling and spin relaxation in phosphorene: Intrinsic versus extrinsic effects. PHYSICAL REVIEW B, 94 (15): 155423. ISSN 2469-9950, 2469-9969
Full text not available from this repository.Abstract
First-principles calculations of the essential spin-orbit and spin relaxation properties of phosphorene are performed. Intrinsic spin-orbit coupling induces spin mixing with the probability of b(2) approximate to 10(-4), exhibiting a large anisotropy, following the anisotropic crystalline structure of phosphorene. For realistic values of the momentum relaxation times, the intrinsic (Elliott-Yafet) spin relaxation times are hundreds of picoseconds to nanoseconds. Applying a transverse electric field ( simulating gating and substrates) generates extrinsic C-2v symmetric spin-orbit fields in phosphorene, which activate the D'yakonov-Perel' mechanism for spin relaxation. It is shown that this extrinsic spin relaxation also has a strong anisotropy and can dominate over the Elliott-Yafet one for strong enough electric fields. Phosphorene on substrates can thus exhibit an interesting interplay of both spin-relaxation mechanisms, whose individual roles could be deciphered using our results.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | BLACK PHOSPHORUS; CONDUCTION ELECTRONS; SINGLE-CRYSTALS; SPINTRONICS; SEMICONDUCTOR; FUNDAMENTALS; EXFOLIATION; MOBILITY; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 24 Apr 2019 10:39 |
| Last Modified: | 24 Apr 2019 10:39 |
| URI: | https://pred.uni-regensburg.de/id/eprint/4101 |
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