Non-Abelian spin-orbit gauge: Persistent spin helix and quantum square ring
| dc.creator | Chen, Son-Hsien | |
| dc.creator | Chang, Ching-Ray | |
| dc.date | 2007-09-03 | |
| dc.date | 2007-09-03 | |
| dc.date.accessioned | 2026-07-07T09:27:34Z | |
| dc.date.available | 2026-07-07T09:27:34Z | |
| dc.description | We re-express the Rashba and Dresselhaus interactions as non-Abelian spin-orbit gauges and provide a new perspective in understanding the persistent spin helix [Phys. Rev. Lett. 97, 236601 (2006)]. A spin-orbit interacting system can be transformed into a free electron gas in the equal-strength Rashba-Dresselhaus [001] linear model, the Dresselhaus [110] linear model, and a one-dimensional system. A general tight-binding Hamiltonian for non-uniform spin-orbit interactions and hoppings along arbitrary directions, within the framework of finite difference method, is obtained. As an application based on this Hamiltonian, a quantum square ring in contact with two ideal leads is found to exhibit four states, insulating, spin-filtering, spin-flipping, and spin-keeping states. | |
| dc.description | 7 pages, 3 figures | |
| dc.identifier | https://arxiv.org/abs/0709.0079 | |
| dc.identifier | http://arxiv.org/abs/0709.0079 | |
| dc.identifier | Phys. Rev. B 77, 045324 (2008) | |
| dc.identifier | doi:10.1103/PhysRevB.77.045324 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/157150 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Non-Abelian spin-orbit gauge: Persistent spin helix and quantum square ring | |
| dc.type | text |