Spin accumulation oscillation and current vortex in the Landauer setup with locally applied biases

Son Hsien Chen, Ming Hao Liu, Kuo Wei Chen, Ching Ray Chang

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)

摘要

The spin accumulation and the out-of-plane spin current in two-dimensional (x-y plane) electron gas with the Rashba spin-orbit interaction are examined. Employing the real-space Landauer-Keldysh Green's function formalism and considering the two-terminal Landauer setup with leads locally contacting the sample, we show that the accumulation patterns for the three components of the spins can be identified from their unique symmetries. With increasing lateral sample length, the out-of-plane spin accumulation oscillates by generating bubbles with alternating signs on the lateral edges. The out-of-plane spin currents are patterned by global vortices, and within the locally biased region of the sample, the direction of the current flow also oscillates as a function of the lateral sample length.

原文English
文章編號07B721
期刊Journal of Applied Physics
103
發行號7
DOIs
出版狀態Published - 2008

All Science Journal Classification (ASJC) codes

  • 一般物理與天文學

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