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|Title:||Spin interference in Rashba metal ring in a time-dependent magnetic field||Authors:||Chen, J.
Abdul Jalil, M.B.
Ghee Tan, S.
|Issue Date:||7-May-2013||Citation:||Chen, J., Abdul Jalil, M.B., Ghee Tan, S. (2013-05-07). Spin interference in Rashba metal ring in a time-dependent magnetic field. Journal of Applied Physics 113 (17) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.4799619||Abstract:||We investigate spin transport in a metal square ring with a strong Rashba spin orbit coupling (RSOC) effect, in the presence of a time-dependent magnetic field. We show that RSOC can be regarded as a spin-dependent gauge field which imparts a spin-dependent geometric phase (Aharonov-Casher phase) to conduction electrons in the ring. Combining the Aharonov-Bohm phase due to the time-dependent magnetic field with the able Aharonov-Casher phase due to RSOC, we are able to construct a spin interference condition, which modulates spin transport in the ring. The spin transport in the system is calculated via the tight-binding non-equilibrium Greens function formalism. Based on our transport calculations, we proposed a potential application of the Rashba square ring system as an alternating spin current generator. © 2013 American Institute of Physics.||Source Title:||Journal of Applied Physics||URI:||http://scholarbank.nus.edu.sg/handle/10635/71845||ISSN:||00218979||DOI:||10.1063/1.4799619|
|Appears in Collections:||Staff Publications|
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