Magnetic field effects on the local electronic structure near a single impurity in Graphene

ORAL

Abstract

Impurities in graphene can have a significant effect on the local electronic structure of graphene when the Fermi level is near the Dirac point. We study the problem of an isolated impurity in a single layer graphene in the presence of a perpendicular magnetic field. We use a linearization approximation for the energy dispersion and employ a T-matrix formalism to calculate the Green's function. We investigate the effect of an external magnetic field on the Friedel oscillations and impurity-induced resonant states. Different types of impurities, such as vacancies, substitutional impurities, and adatoms, are also considered.

*LY and SWT acknowledge financial support from NSF(DMR-0847801)and from the UC Lab Fees Research Program.

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Authors

  • Ling Yang

    • Department of Physics and Astronomy, University of California, Riverside, California, 92521

  • Jian-Xin Zhu

    • Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545

  • Shan-Wen Tsai

    • Department of Physics and Astronomy, University of California, Riverside, California 92521