The Side Effect of Spin Precession and Quantum Interference in a Four-Terminal Nano Device with Rashba Spin-Orbit Coupling

被引:0
|
作者
Wang, Huixian [1 ]
Li, Liben [1 ]
Kang, Dawei [1 ]
机构
[1] Henan Univ Sci & Technol, Sch Phys & Engn, Luoyang 471023, Peoples R China
来源
关键词
Rashba spin-orbit coupling; spin precession; quantum interference; four-terminal nano device;
D O I
10.4028/www.scientific.net/AMR.496.351
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
We propose a four-terminal nano device made of quantum wires with Rashba spin-orbit (SO) coupling. In each terminal there are several independent channels formed with quantum wires. The coherent transmission of electrons in such a nano system is a combined effect of quantum interference and spin precession. When defining two opposite terminals as source and drain leads, the charge and spin currents in channels of other two terminals exhibit spatial distributions which reflect the competition between spin precession and quantum interference during the tunneling of electrons. Since the four-terminal nano device is geometrically simple for the moving paths of charge and spin, our investigation may shed some light on the basic physical picture on this issue.
引用
收藏
页码:351 / 354
页数:4
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