• 文献标题:   Crossed Andreev reflection in a graphene bipolar transistor
  • 文献类型:   Article
  • 作  者:   CAYSSOL J
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW LETTERS
  • ISSN:   0031-9007
  • 通讯作者地址:   Univ Bordeaux 1
  • 被引频次:   87
  • DOI:   10.1103/PhysRevLett.100.147001
  • 出版年:   2008

▎ 摘  要

We investigate the crossed Andreev reflections between two graphene leads connected by a narrow superconductor. When the leads are, respectively, of the n and p type, we find that electron elastic cotunneling and local Andreev reflection are both eliminated even in the absence of any valley-isospin or spin polarizations. We further predict oscillations of both diagonal and cross conductances as a function of the distance between the graphene-superconductor interfaces.