Origin of bulk quantum oscillations in the bulk Kondo insulating ground state of SmB$_6$

ORAL

Abstract

I will discuss our recent observation of quantum oscillations corresponding to a bulk Fermi surface in the Kondo insulator SmB$_6$, and consider their possible origin. New complementary experimental results will be presented which raise the interesting question of whether the underlying ground state corresponds to a novel Kondo regime in which the spin channel is gapless while the charge channel is gapped.

Authors

  • Suchitra Sebastian

    • University of Cambridge
  • B. S. Tan

    • University of Cambridge
  • Y.-T. Hsu

    • University of Cambridge
  • B. Zeng

    • NHMFL
  • M. Ciomaga Hatnean

    • University of Warwick
  • N. Harrison

    • LANL
  • Z. Zhu

    • LANL
  • M. Hartstein

    • University of Cambridge
  • M. Kiourlappou

    • University of Cambridge
  • M. Srivastava

    • University of Cambridge
  • M. D. Johannes

    • Naval Research Laboratory
  • T. P. Murphy

    • NHMFL
  • J.-H. Park

    • NHMFL
  • L. Balicas

    • NHMFL
  • N. Shitsevalova

    • National Academy of Sciences of Ukraine
  • G. G. Lonzarich

    • University of Cambridge
  • G. Balakrishnan

    • University of Warwick