• 文献标题:   Anisotropic AC conductivity of strained graphene
  • 文献类型:   Article
  • 作  者:   OLIVALEYVA M, NAUMIS GG
  • 作者关键词:   strained graphene, density of state, ac conductivity
  • 出版物名称:   JOURNAL OF PHYSICSCONDENSED MATTER
  • ISSN:   0953-8984 EI 1361-648X
  • 通讯作者地址:   Univ Nacl Autonoma Mexico
  • 被引频次:   28
  • DOI:   10.1088/0953-8984/26/12/125302
  • 出版年:   2014

▎ 摘  要

The density of states and the AC conductivity of graphene under uniform strain are calculated using a new Dirac Hamiltonian that takes into account the main three ingredients that change the electronic properties of strained graphene: the real displacement of the Fermi energy, the reciprocal lattice strain and the changes in the overlap of atomic orbitals. Our simple analytical expressions for the density of states and the AC conductivity generalize previous expressions for uniaxial strain. The results suggest a way to measure the Gruneisen parameter beta that appears in any calculation of strained graphene, as well as the emergence of a sort of Hall effect due to shear strain.