Please use this identifier to cite or link to this item: https://doi.org/10.1109/TMAG.2010.2045479
Title: Controlled modulation of spin transport through an asymmetric ring with spin-orbit interaction
Authors: Xing, M.-J.
Jalil, M.B.A. 
Tan, S.G. 
Jiang, Y.
Keywords: Aharonov-casher effect
Asymmetry ring
Rashba spin-orbit interaction
Spin-interference device
Issue Date: Jun-2010
Citation: Xing, M.-J., Jalil, M.B.A., Tan, S.G., Jiang, Y. (2010-06). Controlled modulation of spin transport through an asymmetric ring with spin-orbit interaction. IEEE Transactions on Magnetics 46 (6) : 1471-1474. ScholarBank@NUS Repository. https://doi.org/10.1109/TMAG.2010.2045479
Abstract: We present a theoretical study of spin transport through an asymmetry ring in which the Rashba spin-orbit interaction (RSOI) is the dominant spin-splitting mechanism. The left part and the right part of the asymmetry ring have different RSOI coefficients α1 and α2. Using Griffith's boundary conditions, we investigate the influence of RSOI coefficients on the conductance and spin polarization. For typical range of RSOI coefficients, the transmitted conductance is much more strongly dependent on α2 than α1. While the transmitted spin polarization is strongly influenced by the RSOI strengths of both arms, i.e., α1 and α2, this dependence is distinct from that observed in a symmetric ring. By considering both the conductance and spin polarization, we can optimize the RSOI parameters in the ring for different sensor applications. For instance, one can change the spin polarization almost from the full range of 0 to 1, whilst keeping the conductance constant (since α1 has little effect on conductance). On the other hand, by varying α2, one can tune the RSOI strengths such that a large change in both conductance and spin polarization can be achieved. © 2006 IEEE.
Source Title: IEEE Transactions on Magnetics
URI: http://scholarbank.nus.edu.sg/handle/10635/83587
ISSN: 00189464
DOI: 10.1109/TMAG.2010.2045479
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

2
checked on Nov 14, 2018

WEB OF SCIENCETM
Citations

2
checked on Nov 6, 2018

Page view(s)

34
checked on Nov 2, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.