• 文献标题:   Quasi-Dirac points in one-dimensional graphene superlattices
  • 文献类型:   Article
  • 作  者:   CHEN CH, TSENG P, HSUEH WJ
  • 作者关键词:   graphene electronic transport, superlattice, band structure, dirac equation
  • 出版物名称:   PHYSICS LETTERS A
  • ISSN:   0375-9601 EI 1873-2429
  • 通讯作者地址:   Natl Taiwan Univ
  • 被引频次:   3
  • DOI:   10.1016/j.physleta.2016.07.001
  • 出版年:   2016

▎ 摘  要

Quasi-Dirac points (QDPs) with energy different from the traditional Dirac points (TDPs) have been found for the first time in one-dimensional graphene superlattices. The angular-averaged conductance reaches a minimum value at the QDPs, at which the Fano factor approaches 1/3. Surprisingly, the minimum conductance at these QDPs may be lower than that at the TDPs under certain conditions. This is remarkable as the minimum conductance attainable in graphene superlattices was believed to appear at TDPs. (C) 2016 Elsevier B.V. All rights reserved.