Spin conductance of diffusive graphene nanoribbons: A probe of zigzag edge magnetization

Jan Bundesmann, Ming Hao Liu, Inanç Adagideli, Klaus Richter

研究成果: Article同行評審

9 引文 斯高帕斯(Scopus)

摘要

We investigate spin transport in diffusive graphene nanoribbons with both clean and rough zigzag edges, and long-range potential fluctuations. The long-range fields along the ribbon edges cause the local doping to come close to the charge neutrality point forming p-n junctions with localized magnetic moments, similar to the predicted magnetic edge of clean zigzag graphene nanoribbons. The resulting random edge magnetization polarizes charge currents and causes sample-to-sample fluctuations of the spin currents obeying universal predictions. We show furthermore that, although the average spin conductance vanishes, an applied transverse in-plane electric field can generate a finite spin conductance. A similar effect can also be achieved by aligning the edge magnetic moments through an external magnetic field.

原文English
文章編號195406
期刊Physical Review B - Condensed Matter and Materials Physics
88
發行號19
DOIs
出版狀態Published - 2013 十一月 12

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學

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