• 文献标题:   Graphite and graphene as perfect spin filters
  • 文献类型:   Article
  • 作  者:   KARPAN VM, GIOVANNETTI G, KHOMYAKOV PA, TALANANA M, STARIKOV AA, ZWIERZYCKI M, VAN DEN BRINK J, BROCKS G, KELLY PJ
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW LETTERS
  • ISSN:   0031-9007 EI 1079-7114
  • 通讯作者地址:   Univ Twente
  • 被引频次:   284
  • DOI:   10.1103/PhysRevLett.99.176602
  • 出版年:   2007

▎ 摘  要

Based upon the observations (i) that their in-plane lattice constants match almost perfectly and (ii) that their electronic structures overlap in reciprocal space for one spin direction only, we predict perfect spin filtering for interfaces between graphite and (iii) fcc or (0001) hcp Ni or Co. The spin filtering is quite insensitive to roughness and disorder. The formation of a chemical bond between graphite and the open d-shell transition metals that might complicate or even prevent spin injection into a single graphene sheet can be simply prevented by dusting Ni or Co with one or a few monolayers of Cu while still preserving the ideal spin-injection property.