SPIN CURRENT INDUCED ELECTRIC FIELD IN A RASHBA QUANTUM WIRE

被引：0
作者：
Fu, Xi [1 ,2 ]
Zhou, Guanghui [1 ]
机构：
[1] Hunan Normal Univ, Dept Phys, Changsha 410081, Hunan, Peoples R China
[2] Hunan Coll Sci & Technol, Dept Elect, Yongzhou 425100, Peoples R China
来源：
MODERN PHYSICS LETTERS B | 2010年 / 24卷 / 07期
关键词：
Quantum wire; spin current; electric field; Rashba spin-orbit coupling; WELLS;
D O I：
10.1142/S0217984910022718
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We investigate theoretically the spin current and spin current induced electric field in a weak Rashba spin-orbit coupling quantum wire (QW) using a definition for spin current by means of scattering matrix. It is found that there exists two non-zero linear spin current density elements which have oscillation peaks at the center of QW and their strengths can be changed by the number of propagation modes and Rashba constant, respectively. Moreover, the spin current induced electric field has also been calculated and its strength is measurable with present technology with which can be used to detect spin current.
引用
收藏
页码：649 / 656
页数：8
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