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题名: Electron spin transport through an Aharonov-Bohm ring - a spin switch
作者: Jia, CL ;  Wang, SJ ;  Luo, HG ;  An, JH
刊名: JOURNAL OF PHYSICS-CONDENSED MATTER
出版日期: 2004
卷号: 16, 期号:12, 页码:2043-2052
关键词: BERRY PHASE ;  PERSISTENT CURRENTS ;  QUANTUM OSCILLATIONS ;  MESOSCOPIC SYSTEMS ;  PANCHARATNAM PHASE ;  ORBIT INTERACTION ;  MAGNETIC-FIELD ;  ANANDAN PHASE ;  CONDUCTANCE
学科分类: Physics
通讯作者: Jia, CL , Lanzhou Univ, Dept Modern Phys, Lanzhou 730000, Peoples R China.
部门归属: Lanzhou Univ, Dept Modern Phys, Lanzhou 730000, Peoples R China; Sichuan Univ, Dept Phys, Chengdu 610064, Peoples R China; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: Electron spin transport through an Aharonov-Bohm ring driven by time-dependent inhomogeneous magnetic fields is treated. The system possesses an su(2)(l) x su(2)(s) dynamical symmetry in both orbital angular momentum space and spin space, and is thus proved to be integrable according to algebraic dynamics. Based on the analytical solutions, the relevant physical quantities such as electric current, spin current, magnetization and conductance are calculated. It is found that for a magnetic field with pi/2 twist angle, the direction of spin-polarization will be reversed at zero magnetic flux. In the resonant rotating magnetic field, the spin transmission is oscillating with time t, and can reach unity, so that a complete spin flip can also be induced. The results obtained may be of practical significance for the design of nano-electromagnetic spin devices, such as a spin switch, in a controllable way.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000221102900017
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14106
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Jia, CL,Wang, SJ,Luo, HG,et al. Electron spin transport through an Aharonov-Bohm ring - a spin switch[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2004,16(12):2043-2052.
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