Středa-like formula in the spin Hall effect

Min Fong Yang, Ming Che Chang

研究成果: 雜誌貢獻期刊論文同行評審

20 引文 斯高帕斯(Scopus)


A generalized Středa formula is derived for the spin transport in spin-orbit coupled systems. As compared with the original Středa formula for charge transport, there is an extra contribution of the spin Hall conductance whenever the spin is not conserved. For recently studied systems with quantum spin Hall effect in which the z -component spin is conserved, this extra contribution vanishes and the quantized value of spin Hall conductivity can be reproduced in the present approach. However, as spin is not conserved in general, this extra contribution cannot be neglected, and the quantization is not exact.

期刊Physical Review B - Condensed Matter and Materials Physics
出版狀態已發佈 - 2006

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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