• 文献标题:   Magnetically induced enhancement of shot noise in graphene-based structures
  • 文献类型:   Article
  • 作  者:   GONG YY, GUO Y
  • 作者关键词:   ferromagnetic material, graphene, magnetisation, monolayer, resonant tunnelling, shot noise
  • 出版物名称:   JOURNAL OF APPLIED PHYSICS
  • ISSN:   0021-8979 EI 1089-7550
  • 通讯作者地址:   Tsinghua Univ
  • 被引频次:   7
  • DOI:   10.1063/1.3103306
  • 出版年:   2009

▎ 摘  要

The authors have investigated resonant tunneling in nonuniform magnetically modulated graphene-based double-barrier structures, which can be realized experimentally by depositing successive ferromagnetic stripes on graphene monolayer. The effects of Klein tunneling, resonant tunneling, and magnetically induced wave vector filtering on the shot noise are taken into consideration. It is found that the shot noise is enormously enhanced in antiparallel magnetization alignment, and striking Poissonian value plateaus of the Fano factor can be formed, which is dramatically distinguishable from that in parallel alignment. The results indicate that the shot noise could be a sensitive probe to reveal mechanism of electronic transport in graphene.