Spherical Polarization Analysis for Measuring Spin Hall Materials

ORAL

Abstract

Topological Insulators (TI) combine charge order and spin-orbit coupling leading to an insulating bulk, yet topological surface conduction states. Here we present the results of polarized neutron scattering experiment(s) on single crystal of Bi2Se3, showing a cross-interaction of the polarized surface conduction states with the incident neutron beam polarization. This is significant as it could open possibilities of Topological Insulators being used as polarized neutron detectors and allow a novel probe for TI surface states.

* This work is supported by Department of Energy(DOE) BES grant DE-SC0022986. Neutron scattering experiment(s) are performed in Oak Ridge National Laboratory(ORNL) in High Flux Isotope Reactor(HFIR) and Spallation Neutron Source(SNS) facilities.

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Presenters

  • Guga Khundzakishvili

    Purdue University

Authors

  • Guga Khundzakishvili

    Purdue University

  • Jacob Tosado

    Oak Ridge National Laboratory

  • Peter Jiang

    Oak Ridge National Laboratory

  • Barry Winn

    Oak Ridge National Laboratory, Oak Ridge National Laboratory, Oak Ridge, Tennessee, ORNL

  • Gavin L Hester

    Brock University

  • Colten Koogler

    Naval Surface Warfare Center, Crane Division

  • Robert Cooper

    Naval Surface Warfare Center, Crane Division

  • Neel Jain

    Naval Surface Warfare Center, Crane Division

  • Kevin Goodman

    Naval Surface Warfare Center, Crane Division

  • Wei Xie

    Purdue University

  • Yong P Chen

    Purdue University

  • Arnab Banerjee

    Purdue University