CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES |
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Spin-dependent balance equations in spintronics |
Zheng-Chuan Wang(王正川) |
Department of Physics and CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing 100049, China |
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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.
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Received: 27 July 2017
Revised: 18 September 2017
Accepted manuscript online:
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PACS:
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67.10.Jn
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(Transport properties and hydrodynamics)
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71.10.Ay
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(Fermi-liquid theory and other phenomenological models)
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72.25.-b
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(Spin polarized transport)
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72.10.Bg
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(General formulation of transport theory)
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Fund: 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). |
Corresponding Authors:
Zheng-Chuan Wang
E-mail: wangzc@ucas.ac.cn
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Cite this article:
Zheng-Chuan Wang(王正川) Spin-dependent balance equations in spintronics 2018 Chin. Phys. B 27 016701
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