Abstract According to the general principle of non-equilibrium thermodynamics, we propose a set of macroscopic transport equations for the spin transport and the charge transport. In particular, the spin torque is introduced as a generalized `current density' to describe the phenomena associated with the spin non-conservation in a unified framework. The Einstein relations and the Onsager relations between different transport phenomena are established. Specifically, the spin transport properties of the isotropic non-magnetic and the isotropic magnetic two-dimensional electron gases are fully described by using this theory, in which only the macroscopic-spin-related transport phenomena allowed by the symmetry of the system are taken into account.
Received: 23 June 2008
Revised: 03 July 2008
Accepted manuscript online:
(Electronic transport in nanoscale materials and structures)
Fund: Project supported by
the National Key Basic Research Special Foundation of China (Grant
No 2006CB921300), and the National Natural Science Foundation of
China (Grant No 10604063).
Cite this article:
Li Da-Fang(李大芳) and Shi Jun-Ren(施均仁) Macroscopic spin and charge transport theory 2009 Chin. Phys. B 18 282
Spin current transmission in Co1-xTbx films Li Wang(王力), Yangtao Su(苏仰涛), Yang Meng(孟洋), Haibin Shi(石海滨), Xinyu Cao(曹昕宇), and Hongwu Zhao(赵宏武). Chin. Phys. B, 2022, 31(2): 027504.
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