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arXiv 0709.0725cond-mat.mes-hall
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自旋霍尔效应理论

Theory of spin Hall effect

Eugene M. Chudnovsky

摘要:

提出了一个推广的Drude模型,它考虑了载流子的自旋和自旋-轨道相互作用。自旋电流的产生是由于外加电场、晶场和载流子散射的共同作用。自旋霍尔电导率的表达式推导出的金属和半导体是独立的散射机制。在立方金属中,自旋霍尔电导率$σ_s$和电荷电导率$σ_c$通过$σ_s = [2 π\hbar/(3mc^2)]σ_c^2$相关,其中$m$是裸电子质量。理论计算值与实验值符合较好。

英文摘要:

An extension of Drude model is proposed that accounts for spin and spin-orbit interaction of charge carriers. Spin currents appear due to combined action of the external electric field, crystal field and scattering of charge carriers. The expression for spin Hall conductivity is derived for metals and semiconductors that is independent of the scattering mechanism. In cubic metals, spin Hall conductivity $σ_s$ and charge conductivity $σ_c$ are related through $σ_s = [2 π\hbar/(3mc^2)]σ_c^2$ with $m$ being the bare electron mass. Theoretically computed value is in agreement with experiment.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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