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Electron spin transport through an Aharonov-Bohm ring - a spin switch
Jia, CL; Wang, SJ; Luo, HG; An, JH; Jia, CL , Lanzhou Univ, Dept Modern Phys, Lanzhou 730000, Peoples R China.
2004
发表期刊JOURNAL OF PHYSICS-CONDENSED MATTER
ISSN0953-8984
卷号16期号:12页码:2043-2052
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.
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
关键词Berry Phase Persistent Currents Quantum Oscillations Mesoscopic Systems Pancharatnam Phase Orbit Interaction Magnetic-field Anandan Phase Conductance
学科领域Physics
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收录类别SCI
WOS记录号WOS:000221102900017
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被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/14106
专题理论物理所SCI论文
通讯作者Jia, CL , Lanzhou Univ, Dept Modern Phys, Lanzhou 730000, Peoples R China.
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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.
APA Jia, CL,Wang, SJ,Luo, HG,An, JH,&Jia, CL , Lanzhou Univ, Dept Modern Phys, Lanzhou 730000, Peoples R China..(2004).Electron spin transport through an Aharonov-Bohm ring - a spin switch.JOURNAL OF PHYSICS-CONDENSED MATTER,16(12),2043-2052.
MLA Jia, CL,et al."Electron spin transport through an Aharonov-Bohm ring - a spin switch".JOURNAL OF PHYSICS-CONDENSED MATTER 16.12(2004):2043-2052.
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