High-pressure phases of Bi$_2$Se$_3$

ORAL

Abstract

We present x-ray diffraction measurements and density functional calculations of Bi$_2$Se$_3$ at pressures up to 80 GPa. Four phases are observed as the pressure is increased. The diffraction pattern of each phase agrees well with diffraction patterns computed from structures determined by density functional theory. The electronic structure of the high-pressure phases will be discussed.

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Authors

  • C. Stephen Hellberg

    • Naval Research Lab

  • Jason R. Jeffries

    • Lawrence Livermore National Lab

  • Igor I. Mazin

    • Naval Research Lab

  • Steve M. Young

    • Naval Research Lab

  • Nicholas P. Butch

    • NIST Center for Neutron Research

  • Kevin Kirshenbaum

    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland

  • Paul S. Syers

    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland

  • Johnpierre Paglione

    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland