• 文献标题:   Resonant modes in strain-induced graphene superlattices
  • 文献类型:   Article
  • 作  者:   PELLEGRINO FMD, ANGILELLA GGN, PUCCI R
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   1098-0121
  • 通讯作者地址:   Univ Catania
  • 被引频次:   25
  • DOI:   10.1103/PhysRevB.85.195409
  • 出版年:   2012

▎ 摘  要

We study tunneling across a strain-induced superlattice in graphene. In studying the effect of applied strain on the low-lying Dirac-like spectrum, both a shift of the Dirac points in reciprocal space, and a deformation of the Dirac cones is explicitly considered. The latter corresponds to an anisotropic, possibly nonuniform, Fermi velocity. Along with the modes with unit transmission usually found across a single barrier, we analytically find additional resonant modes when considering a periodic structure of several strain-induced barriers. We also study the bandlike spectrum of bound states, as a function of conserved energy and transverse momentum. Such a strain-induced superlattice may thus effectively work as a mode filter for transport in graphene.