• 文献标题:   Triplet proximity effect and odd-frequency pairing in graphene
  • 文献类型:   Article
  • 作  者:   LINDER J, BLACKSCHAFFER AM, SUDBO A
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   1098-0121
  • 通讯作者地址:   Norwegian Univ Sci Technol
  • 被引频次:   16
  • DOI:   10.1103/PhysRevB.82.041409
  • 出版年:   2010

▎ 摘  要

We study the interplay between proximity-induced superconductivity and ferromagnetism in graphene by self-consistently solving the Bogoliubov de Gennes equations on the honeycomb lattice. We find that a strong triplet proximity effect is generated in graphene, leading to odd-frequency pairing correlations. These odd-frequency correlations are clearly manifested in the local density of states of the graphene sheet, which can be probed via scanning tunnel microscope measurements. Motivated by recent experiments on S vertical bar N vertical bar S graphene Josephson junctions, we also study the spectrum of Andreev bound states formed in the normal region due to the proximity effect. Our results may be useful for interpreting spectroscopic data and can also serve as a guideline for future experiments.