NDLI: Controlled Modulation of Spin Transport Through an Asymmetric Ring With Spin-Orbit Interaction

Content Provider	IEEE Xplore Digital Library
Author	Xing, M.-J. Jalil, M.B.A. Tan, S.G. Jiang, Y.
Copyright Year	1965
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 ¿₁ than ¿₂ . 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 ¿₂ than ¿₁ . While the transmitted spin polarization is strongly influenced by the RSOI strengths of both arms, i.e., ¿₁ and ¿₂, 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 ¿₂ has little effect on conductance). On the other hand, by varying a%, one can tune the RSOI strengths such that a large change in both conductance and spin polarization can be achieved.
Sponsorship	IEEE Magnetics Society
Starting Page	1471
Ending Page	1474
Page Count	4
File Size	391325
File Format	PDF
ISSN	00189464
Volume Number	46
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Polarization Arm Laboratories Data engineering Inorganic materials Materials science and technology Material storage Boundary conditions Voltage Electrons spin-interference device Aharonov-casher effect asymmetry ring Rashba spin-orbit interaction
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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