Effect of magnetic and non-magnetic substitution in topological Kondo insulator SmB6

ORAL

Abstract

The topological Kondo Insulator SmB6 is believed be the first realization of a topological insulator with true bulk insulating properties that coexist with a robust conducting surface state that mounting evidence suggests is non-trivial. Here we report of a systemic study of the magnetic and non-magnetic doping effect TKI SmB6, in particular the effect of iron inclusion as well as both magnetic and non-magnetic rare earth substitution in Sm1-xRxB6. We will present our careful investigations of crystal structure, transport properties and magnetization, as well as muon spin rotation studies that together suggest a very profound effect on both the bulk and surface state properties.

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Authors

  • Xiangfeng Wang

    • University of Maryland, College Park

  • Yasuyuki Nakajima

    • University of Maryland
    • University of Maryland, College Park
    • Univ of Maryland-College Park

  • Shanta Saha

    • University of Maryland, College Park
    • University of Maryland
    • Center for Nano Physics and Advanced Materials, Dept. of Physics, University of Maryland, College Park, Maryland

  • Johnpierre Paglione

    • University of Maryland, College Park
    • Center for Nano Physics and Advanced Materials, Dept. of Physics, University of Maryland, College Park, Maryland

  • Jeff Sonier

    • Simon Frasier University