中国物理B ›› 2018, Vol. 27 ›› Issue (1): 16701-016701.doi: 10.1088/1674-1056/27/1/016701

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Spin-dependent balance equations in spintronics

Zheng-Chuan Wang(王正川)   

  1. Department of Physics and CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2017-07-27 修回日期:2017-09-18 出版日期:2018-01-05 发布日期:2018-01-05
  • 通讯作者: Zheng-Chuan Wang E-mail:wangzc@ucas.ac.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11274378), the Key Research Program of the Chinese Academy of Sciences (Grant No. XDPB08-3), and the MOST of China (Grant No. 2013CB933401).

Spin-dependent balance equations in spintronics

Zheng-Chuan Wang(王正川)   

  1. Department of Physics and CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2017-07-27 Revised:2017-09-18 Online:2018-01-05 Published:2018-01-05
  • Contact: Zheng-Chuan Wang E-mail:wangzc@ucas.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11274378), the Key Research Program of the Chinese Academy of Sciences (Grant No. XDPB08-3), and the MOST of China (Grant No. 2013CB933401).

摘要: It is commonly known that the hydrodynamic equations can be derived from the Boltzmann equation. In this paper, we derive similar spin-dependent balance equations based on the spinor Boltzmann equation. Besides the usual charge current, heat current, and pressure tensor, we also explore the characteristic spin accumulation and spin current as well as the spin-dependent pressure tensor and heat current in spintronics. The numerical results of these physical quantities are demonstrated using an example of spin-polarized transport through a mesoscopic ferromagnet.

关键词: spin-dependent balance equations, spinor Boltzmann equation, spintronics, spin current

Abstract: It is commonly known that the hydrodynamic equations can be derived from the Boltzmann equation. In this paper, we derive similar spin-dependent balance equations based on the spinor Boltzmann equation. Besides the usual charge current, heat current, and pressure tensor, we also explore the characteristic spin accumulation and spin current as well as the spin-dependent pressure tensor and heat current in spintronics. The numerical results of these physical quantities are demonstrated using an example of spin-polarized transport through a mesoscopic ferromagnet.

Key words: spin-dependent balance equations, spinor Boltzmann equation, spintronics, spin current

中图分类号:  (Transport properties and hydrodynamics)

  • 67.10.Jn
71.10.Ay (Fermi-liquid theory and other phenomenological models) 72.25.-b (Spin polarized transport) 72.10.Bg (General formulation of transport theory)