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D'yakonov-Perel' spin relaxation in a bilayer with local structural inversion asymmetry
| Title: | D'yakonov-Perel' spin relaxation in a bilayer with local structural inversion asymmetry |
| Authors: | Hayashida, Kenji Browse this author | | Akera, Hiroshi Browse this author →KAKEN DB |
| Issue Date: | 31-Jan-2020 |
| Publisher: | American Physical Society (APS) |
| Journal Title: | Physical Review B |
| Volume: | 101 |
| Issue: | 3 |
| Start Page: | 035306 |
| Publisher DOI: | 10.1103/PhysRevB.101.035306 |
| Abstract: | The spin relaxation in the D'yakonov-Perel' mechanism is theoretically studied in a symmetric double-quantum-well structure (DQWS) with an intersubband spin-orbit interaction (SOT) due to the local structural inversion asymmetry and the linear-in-wave-number Dresselhaus SOI. It is found that the spin relaxation rate - induced by the intersubband SOI exhibits a suppression with omega tau(p) in the Lorentzian form of (1 + omega(2)tau(2)(p))(-1), where h omega is the intersubband energy separation and tau(p) is the momentum relaxation time. The present Lorentzian suppression leads to a crossover with increasing omega tau(p) from the D'yakonov-Perel'-type relaxation (the spin relaxation time tau(s) proportional to tau(-1)(p)) to the Elliott-Yafet-type relaxation (tau(s) proportional to tau(p)). It is also shown that the spin relaxation rate in the presence of both the linear Dresselhaus SOI and the intersubband SOI is isotropic with respect to the in-plane spin direction in the present DQWS in contrast to a single quantum well exhibiting an in-plane anisotropy. |
| Rights: | Copyright (2020) by The American Physical Society. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/76925 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 明楽 浩史
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