TITLE

Controllable quantum spin precession by Aharonov–Casher phase in a conducting ring

AUTHOR(S)
Shun-Qing Shen, Amlan J.; Zhi-Jian Li; Zhongshui Ma, Amlan J.
PUB. DATE
February 2004
SOURCE
Applied Physics Letters;2/9/2004, Vol. 84 Issue 6, p996
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We investigate quantum spin transport in a structure of a conducting ring embedded in a textured electric field with two leads, and obtain an exact solution for the problem. The spin precession induced by the Aharonov–Casher phase is studied. It is shown that the spin-polarized current and its polarization orientation can be controlled by the electric field. As a result the modulated polarization orientation is a function of the geometric phase which originates from spin–orbital interaction in the ring. © 2004 American Institute of Physics.
ACCESSION #
12141811

 

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