Colloquium: Andreev reflection and Klein tunneling in graphene

  title={Colloquium: Andreev reflection and Klein tunneling in graphene},
  author={C. W. J. Beenakker},
  journal={Reviews of Modern Physics},
  • C. Beenakker
  • Published 20 October 2007
  • Physics
  • Reviews of Modern Physics
A colloquium-style introduction to two electronic processes in a carbon monolayer (graphene) is presented, each having an analog in relativistic quantum mechanics. Both processes couple electronlike and holelike states, through the action of either a superconducting pair potential or an electrostatic potential. The first process, Andreev reflection, is the electron-to-hole conversion at the interface with a superconductor. The second process, Klein tunneling, is the tunneling through a $p\text… 
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