• 文献标题:   Wave-packet scattering on graphene edges in the presence of a pseudomagnetic field
  • 文献类型:   Article
  • 作  者:   DA COSTA DR, CHAVES A, FARIAS GA, COVACI L, PEETERS FM
  • 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:   Univ Fed Ceara
  • 被引频次:   18
  • DOI:   10.1103/PhysRevB.86.115434
  • 出版年:   2012

▎ 摘  要

The scattering of a Gaussian wave packet in armchair and zigzag graphene edges is theoretically investigated by numerically solving the time-dependent Schrodinger equation for the tight-binding model Hamiltonian. Our theory allows us to investigate scattering in reciprocal space, and depending on the type of graphene edge we observe scattering within the same valley, or between different valleys. In the presence of an external magnetic field, the well-known skipping orbits are observed. However, our results demonstrate that in the case of a pseudomagnetic field, induced by nonuniform strain, the scattering by an armchair edge results in a nonpropagating edge state.