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  • 文献标题:   Remarkable enhancement of terahertz conductivity of graphene tuned by periodic gate voltage
  • 文献类型:   Article
  • 作　　者:   JIANG LW, ZHENG YS
  • 作者关键词:   optical conductivity, superlattice, graphene
  • 出版物名称:   PHYSICS LETTERS A
  • ISSN:   0375-9601 EI 1873-2429
  • 通讯作者地址:   Jilin Univ
  • 被引频次:   4
  • DOI:   10.1016/j.physleta.2010.10.055
  • 出版年:   2010

▎ 摘　　要

Optical conductivity of a graphene sheet subject to a one-dimensional cosinusoidal potential is studied. We find that the optical conductivity can be tuned by the strength of the superlattice potential. When this strength is within a certain range the terahertz conductivity can be enhanced by two orders of magnitude. (C) 2010 Elsevier B.V. All rights reserved.