Directional dependence of spin currents induced by Aharonov-Casher phase
SCIE
SCOPUS
- Title
- Directional dependence of spin currents induced by Aharonov-Casher phase
- Authors
- Choi, T; Ryu, CM; Jayannavar, AM
- Date Issued
- 1998-08-10
- Publisher
- WORLD SCIENTIFIC PUBL CO PTE LTD
- Abstract
- We have calculated the persistent spin current of an open ring induced by the Aharonov-Casher phase. For unpolarized electrons there exist no persistent charge currents, but persistent spin currents. We show that, in general, the magnitude of the persistent spin current in a ring depends on the direction of the direct current flow from one reservoir to another. The persistent spin current is modulated by the cosine function of the spin precession angle. The nonadiabatic Aharonov-Casher phase gives anomalous behaviors. The Aharonov-Anandan phase is determined by the solid angle of spin precession. When the nonadiabatic Aharonov-Anandan phase approaches a constant value with the increase of the electric field, the periodic behavior of the spin persistent current occurs in an adiabatic limit. In this limit the periodic behavior of the persistent spin current could be understood by the effective spin-dependent Aharonov-Bohm flux.
- Keywords
- MESOSCOPIC RINGS; PERSISTENT CURRENTS; CURRENT MAGNIFICATION; NEUTRAL PARTICLES; QUANTUM TRANSPORT; BERRY PHASE; LOOP; ELECTRONS; SINGLE
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/20658
- DOI
- 10.1142/S02179792980
- ISSN
- 0217-9792
- Article Type
- Article
- Citation
- INTERNATIONAL JOURNAL OF MODERN PHYSICS B, vol. 12, no. 20, page. 2091 - 2102, 1998-08-10
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.