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arXiv 1111.5082cond-mat.mes-hallcond-mat.other
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扩散系统内禀逆自旋霍尔效应的非普适性

Nonuniversality of the intrinsic inverse spin-Hall effect in diffusive systems

L. Y. Wang, A. G. Mal'shukov, C. S. Chu

摘要:

研究了在Rashba和立方Dresselhaus自旋轨道相互作用下,二维电子气中自旋电流诱导的电流。我们发现,与这些电流相关的因素并不普遍,而是取决于自旋电流的起源。在两种情况下发现了显著的区别:由非均匀自旋密度的扩散产生的自旋流和纯均匀自旋流。我们发现,在前一种情况下,ISHE电流是有限的,而在后一种情况下,它变成零,如果自旋轨道耦合Rashba相互作用。

英文摘要:

We studied the electric current induced in a two-dimensional electron gas by the spin current, in the presence of Rashba and cubic Dresselhaus spin-orbit interactions. We found out that the factor relating these currents is not universal, but rather depends on the origin of the spin current. Drastic distinction has been found between two cases: the spin current created by diffusion of an inhomogeneous spin density, and the pure homogeneous spin current. We found out that in the former case the ISHE electric current is finite, while it turns to zero in the latter case, if the spin-orbit coupling is represented by Rashba interaction.

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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