Bulk properties and quantum oscillations in Bi$_2$Se$_3$ topological insulator crystals

ORAL

Abstract

The compound Bi$_2$Se$_3$, a member of the recently heralded class of topological insulators, possesses a spin polarized metallic surface state and is theoretically expected to be a bulk insulator. In practice, stoichiometric Bi$_2$Se$_3$ is metallic, with carriers believed to arise from intrinsic doping by defects. The synthesis of undoped Bi$_2$Se$_3$ will be presented, along with measurements of electrical resistivity, Hall effect, and angle-dependent quantum oscillations.

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Authors

  • Nicholas Butch

    • University of Maryland, Physics Department
    • University of Maryland, College Park
    • UC San Diego
    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD 20742
    • Center for Nanophysics \& Advanced Materials and Department of Physics, University of Maryland, College Park, MD 20742, USA
    • Center for Nano Physics and Advanced Materials, Department of Physics, University of Maryland
    • University of Maryland

  • Kevin Kirshenbaum

    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD 20742

  • Johnpierre Paglione

    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD 20742