Szolnoki, Lenard and Dora, Balazs and Kiss, Annamaria and Fabian, Jaroslav and Simon, Ferenc (2017) Intuitive approach to the unified theory of spin relaxation. PHYSICAL REVIEW B, 96 (24): 245123. ISSN 2469-9950, 2469-9969
Full text not available from this repository. (Request a copy)Abstract
Spin relaxation is conventionally discussed using two different approaches for materials with and without inversion symmetry. The former is known as the Elliott-Yafet (EY) theory and for the latter the D'yakonov-Perel' (DP) theory applies. We discuss herein a simple and intuitive approach to demonstrate that the two seemingly disparate mechanisms are closely related. A compelling analogy between the respective Hamiltonians is presented, and that the usual derivation of spin-relaxation times, in the respective frameworks of the two theories, can be performed. The result also allows us to obtain less canonical spin-relaxation regimes, i.e. the generalization of the EY when the material has a large quasiparticle broadening, and the DP mechanism in ultrapure semiconductors. The method also allows a practical and intuitive numerical implementation of the spin-relaxation calculation, which is demonstrated for MgB2, which has anomalous spin-relaxation properties.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CONDUCTION ELECTRONS; QUANTUM-WELLS; SPINTRONICS; PRECESSION; RESONANCE; ALUMINUM; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2018 13:18 |
| Last Modified: | 28 Feb 2019 09:41 |
| URI: | https://pred.uni-regensburg.de/id/eprint/1682 |
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