Spin-orbit coupling and spin current in mesoscopic devices  

作　　者：XING YanXia SUN QingFeng 

机构地区：[1]Department of Physics,Beijing Institute of Technology [2]International Center for Quantum Materials,Peking University [3]Institute of Physics,Chinese Academy of Sciences

出　　处：《Science China(Physics,Mechanics & Astronomy)》2013年第1期196-206,共11页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by China National Funds for Distinguished Young Scientists(Grant No.10525418);the National Natural Science Foundation of China(Grant Nos.10734110 and 11121063);the National Basic Research Program of China(Grant No.2012CB921303)

摘　　要：Recently,the spin-orbit coupling and spin current in nanodevice have been investigated extensively.In this paper,we review the recent progresses in this field.We introduce the real space Hamiltonian and the second quantization Hamiltonian of a typical quantum transport mesoscopic device,metal-QD-metal configuration,containing the spin-orbit interaction,e-e interactions,and magnetic field.Some noteworthy effects(e.g.,the spin-polarized current,spin accumulation,persistent spin current) originated from the spin-orbit interaction are reviewed,and the electric field induced by spin-current is mentioned.Lastly,we introduce some unsolved problems and prospects in this field.Recently, the spin-orbit coupling and spin current in nanodevice have been investigated extensively. In this paper, we review the recent progresses in this field. We introduce the real space Hamiltonian and the second quantization Hamiltonian of a typical quantum transport mesoscopic device, metal-QD-metal configuration, containing the spin-orbit interaction, e-e interactions, and magnetic field. Some noteworthy effects （e.g., the spin-polarized current, spin accumulation, persistent spin current） originated from the spin-orbit interaction are reviewed, and the electric field induced by spin-current is mentioned. Lastly, we introduce some unsolved problems and prospects in this field.

关 键 词：spin-orbital coupling spin polarization spin current mesoscopic device 

分 类 号：O413[理学—理论物理]