• 文献标题:   Fine structure of the local pseudogap and Fano effect for superconducting electrons near a zigzag graphene edge
  • 文献类型:   Article
  • 作  者:   TKACHOV G
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   2469-9950 EI 2469-9969
  • 通讯作者地址:   Max Planck Inst Phys Komplexer Syst
  • 被引频次:   19
  • DOI:   10.1103/PhysRevB.76.235409
  • 出版年:   2007

▎ 摘  要

Motivated by recent scanning tunneling experiments on zigzag-terminated graphene, this paper investigates an interplay of evanescent and extended quasiparticle states in the local density of states near a zigzag edge using the Green's function of the Dirac equation. A model system is considered where the local electronic structure near the edge influences transport of both normal and superconducting electrons via a Fano resonance. In particular, the temperature enhancement of the critical Josephson current and 0-pi transitions are predicted.