• 文献标题:   Confined states and direction-dependent transmission in graphene quantum wells
  • 文献类型:   Article
  • 作  者:   PEREIRA JM, MLINAR V, PEETERS FM, VASILOPOULOS P
  • 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 Antwerp
  • 被引频次:   187
  • DOI:   10.1103/PhysRevB.74.045424
  • 出版年:   2006

▎ 摘  要

We report the existence of confined massless fermion states in a graphene quantum well (QW) by means of analytical and numerical calculations. These states show an unusual quasilinear dependence on the momentum parallel to the QW: their number depends on the wave vector and is constrained by electron-hole conversion in the barrier regions. An essential difference with nonrelativistic electron states is a mixing between free and confined states at the edges of the free-particle continua, demonstrated by the direction-dependent resonant transmission across a potential well.