• 文献标题:   Interplay between snake and quantum edge states in a graphene Hall bar with a pn-junction
  • 文献类型:   Article
  • 作  者:   MILOVANOVIC SP, MASIR MR, PEETERS FM
  • 作者关键词:  
  • 出版物名称:   APPLIED PHYSICS LETTERS
  • ISSN:   0003-6951 EI 1077-3118
  • 通讯作者地址:   Univ Antwerp
  • 被引频次:   15
  • DOI:   10.1063/1.4896769
  • 出版年:   2014

▎ 摘  要

The magneto-and Hall resistance of a locally gated cross shaped graphene Hall bar is calculated. The edge of the top gate is placed diagonally across the center of the Hall cross. Four-probe resistance is calculated using the Landauer-Buttiker formalism, while the transmission coefficients are obtained using the non-equilibrium Green's function approach. The interplay between transport due to edge channels and snake states is investigated. When two edge channels are occupied, we predict oscillations in the Hall and the bend resistance as function of the magnetic field, which are a consequence of quantum interference between the occupied snake states. (C) 2014 AIP Publishing LLC.