• 文献标题:   Interplay between real and pseudomagnetic field in graphene with strain
  • 文献类型:   Article
  • 作  者:   KIM KJ, BLANTER YM, AHN KH
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   1098-0121 EI 1550-235X
  • 通讯作者地址:   Chungnam Natl Univ
  • 被引频次:   46
  • DOI:   10.1103/PhysRevB.84.081401
  • 出版年:   2011

▎ 摘  要

We investigate electric and magnetic properties of graphene with rotationally symmetric strain. The strain generates a large pseudomagnetic field with alternating sign in space, which forms a strongly confined quantum dot connected to six chiral channels. The orbital magnetism, degeneracy, and channel opening can be understood from the interplay between the real and pseudomagnetic fields which have different parities under time reversal and mirror reflection. While the orbital magnetic response of the confined state is diamagnetic, it can be paramagnetic if there is an accidental degeneracy with opposite mirror reflection parity.