• 文献标题:   Photoinduced valley currents in strained graphene
  • 文献类型:   Article
  • 作  者:   LINNIK TL
  • 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:   Natl Acad Sci Ukraine
  • 被引频次:   11
  • DOI:   10.1103/PhysRevB.90.075406
  • 出版年:   2014

▎ 摘  要

The theoretical results are presented showing that strain-induced anisotropy of graphene spectrum gives rise to the valley currents under the illumination by normally incident light. The currents of the two graphene valleys are mutually compensated providing zero net electric current. The magnitude and direction of the valley currents are determined by the parameters of strain and light polarization. For not too high photon energy strain-induced valley current exceeds that due to intrinsic warping of the graphene spectrum which suggests feasibility of strain-mediated valleytronics.