Rashba spin precession in a magnetic field

Wang, J., Sun, H. B. and Xing, D. Y. (2004) Rashba spin precession in a magnetic field. Physical Review B, Condensed matter and materials physics, 69 8 Article # 085304: 853041-853045. doi:10.1103/PhysRevB.69.085304

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Author Wang, J.
Sun, H. B.
Xing, D. Y.
Title Rashba spin precession in a magnetic field
Journal name Physical Review B, Condensed matter and materials physics   Check publisher's open access policy
ISSN 1098-0121
Publication date 2004
Sub-type Article (original research)
DOI 10.1103/PhysRevB.69.085304
Open Access Status File (Publisher version)
Volume 69
Issue 8 Article # 085304
Start page 853041
End page 853045
Total pages 5
Place of publication New York
Publisher American Physical Society
Collection year 2004
Language eng
Subject C1
240204 Condensed Matter Physics - Other
780102 Physical sciences
0299 Other Physical Sciences
Abstract Spin precession due to Rashba spin-orbit coupling in a two-dimension electron gas is the basis for the spin field effect transistor, in which the overall perfect spin-polarized current modulation could be acquired. There is a prerequisite, however, that a strong transverse confinement potential should be imposed on the electron gas or the width of the confined quantum well must be narrow. We propose relieving this rather strict limitation by applying an external magnetic field perpendicular to the plane of the electron gas because the effect of the magnetic field on the conductance of the system is equivalent to the enhancement of the lateral confining potential. Our results show that the applied magnetic field has little effect on the spin precession length or period although in this case Rashba spin-orbit coupling could lead to a Zeeman-type spin splitting of the energy band.
Keyword Physics, Condensed Matter
Electronic Transport
Orbit Interaction
Point Contacts
Gate Control
Injection
Conductance
Heterostructure
Semiconductor
Systems
Barrier
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
2005 Higher Education Research Data Collection
 
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Created: Wed, 15 Aug 2007, 04:33:00 EST