Searching for ideal bulk insulating Pb-system topological crystalline insulator materials

ORAL

Abstract

The discovery of 3D topological insulator materials opened up a new research field in the condensed matter physics. However, there is no real bulk insulating topological insulator materials available for experimental research so that we can explore the new field. In order to search for the ideal bulk insulating topological insulator materials, we have grown a large number of the single crystals of Pb-system (Pb-Sn-In-Te) topological crystalline insulator. We have measured the physical properties on these single crystals by various techniques. We have studied the effect of crystal growth condition, impurity and composition on the bulk electrical conductivity of these single crystals. We try to find out which composition and crystal growth condition is the best for the ideal bulk insulating topological crystalline insulator materials.

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Authors

  • Genda Gu

    Brookhaven National Lab, Brookhaven National Laboratory, Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, NY 11973, USA, Brookhaven Natl Lab, BNL, Department of Physics, Brookhaven National Laboratory, Brookhaven National Lab, Upton, NY, University of Colorado at Boulder

  • R.D. Zhong

    Brookhaven Natl Lab

  • John Schneeloch

    Brookhaven National Laboratory, Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, NY 11973, USA, Brookhaven Natl Lab, BNL, Stony Brook, Brookhaven National Lab

  • T.S. Liu

    Brookhaven Natl Lab

  • John Tranquada

    Brookhaven National Laboratory, Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, NY 11973, USA, Brookhaven Natl Lab, BNl

  • X.G. He

    Brookhaven Natl Lab

  • Wei Ku

    Brookhaven Natl Lab

  • I. Pletikosic

    Brookhaven Natl Lab

  • T. Valla

    Brookhaven Natl Lab