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arXiv 1704.06451cond-mat.supr-con
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内禀自旋轨道耦合下的Usadel方程:正常和超导系统磁电效应的统一理论

Usadel equation in the presence of intrinsic spin-orbit coupling: A unified theory of magneto-electric effects in normal and superconducting systems

I. V. Tokatly

摘要:

Usadel方程是描述扩散极限下超导结构的标准理论工具。在这里,我推导出Usadel方程的gyrotropic材料与一个通用的线性动量自旋轨道耦合。它解释了自旋-电荷/单重态-三重态耦合,并在正常状态下简化为描述各种磁电效应的自旋-电荷扩散方程组,例如自旋霍尔效应(SHE)、自旋-电流效应(SGE)及其逆效应。因此,导出的Usadel方程建立了这些效应与它们的超导对应物的直接联系。本形式主义的工作功率的散装SGE的例子说明。

英文摘要:

The Usadel equation is the standard theoretical tool for the description of superconducting structures in the diffusive limit. Here I derive the Usadel equation for gyrotropic materials with a generic linear in momentum spin-orbit coupling. It accounts for the spin-charge/singlet-triplet coupling and in the normal state reduces to the system of spin-charge diffusion equations describing various magneto-electric effects, such as the spin Hall effect (SHE), the spin-galvanic effect (SGE) and their inverses. Therefore the derived Usadel equation establishes a direct connection of these effects to their superconducting counterparts. The working power of the present formalism is illustrated on the example of the bulk SGE.

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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