Intravalley multiple scattering of quasiparticles in graphene

J. Y. Vaishnav, Justin Q. Anderson, Jamie D. Walls

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

We develop a theoretical description of intravalley scattering of quasiparticles in graphene from multiple short-range scatterers of size much greater than the carbon-carbon bond length. Our theory provides a method to rapidly calculate the Green's function in graphene for arbitrary configurations of scatterers. We demonstrate that noncollinear multiple scattering trajectories generate pseudospin rotations that alter quasiparticle interference, resulting in significant modifications to the shape, intensity, and pattern of the interference fringes in the local density of states (LDOS). We illustrate these effects via theoretical calculations of the LDOS for a variety of scattering configurations in single layer graphene. A clear understanding of impurity scattering in graphene is a step toward exploiting graphene's unique properties to build future devices.

Original languageEnglish (US)
Article number165437
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume83
Issue number16
DOIs
StatePublished - Apr 25 2011

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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