• 文献标题:   Spin injection into multilayer graphene from highly spin-polarized Co2FeSi Heusler alloy
  • 文献类型:   Article
  • 作  者:   YAMAGUCHI T, MORIYA R, OKI S, YAMADA S, MASUBUCHI S, HAMAYA K, MACHIDA T
  • 作者关键词:  
  • 出版物名称:   APPLIED PHYSICS EXPRESS
  • ISSN:   1882-0778 EI 1882-0786
  • 通讯作者地址:   Univ Tokyo
  • 被引频次:   9
  • DOI:   10.7567/APEX.9.063006
  • 出版年:   2016

▎ 摘  要

We demonstrate electrical spin injection into multilayer graphene (MLG) in a lateral spin valve device from a highly spin-polarized Co2FeSi (CFS) Huesler electrode. Exfoliated MLG was transferred onto prepatterned epitaxial CFS wires grown on an Si(111) substrate by a polymer-based transfer method. This method enabled us to fabricate multiple single-crystal CFS electrodes in contact with MLG. Electrical spin injection from CFS to MLG was detected through nonlocal magnetoresistance (MR) measurement. A nonlocal spin signal of 430 Omega was observed; this is the largest value among all reported nonlocal MR values in graphene-based devices. (C) 2016 The Japan Society of Applied Physics