Development and Application of Self-Oscillating LC Circuit Driven by a Topological Kondo Insulator in Extreme Conditions

ORAL

Abstract

Self-oscillating circuits are desirable for use in the study of quantum materials due to their high-precision but are challenging to execute in high-field, low-temperature environments. Recently, it has been shown that single crystals of the mixed-valence Kondo insulator SmB6 can exhibit negative differential resistance (NDR) in the characteristic V-I curve at low temperatures which could have useful applications in research of quantum materials. Here, we will present a study of the feasibility of using such crystals as elements in a self-oscillating circuit. We explore the bounds of the joule-heating-driven mechanisms with measurements down to 20mK temperatures and fields up to 20 Tesla. We will explore the tuning of crystal size and analyze the oscillating behavior with respect to temperature, field, size, and geometry, to develop a prototype for applying these crystals to generic studies of quantum materials.

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Authors

  • Sarah Adams

    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD 20742, USA

  • Hyunsoo Kim

    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD 20742, USA
    • Center for Nanophysics and Advanced Materials, Department of Physics, Univeristy of Maryland, College Park, MD 20742, USA
    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park 20742, USA

  • Johnpierre Paglione

    • Univ of Maryland-College Park
    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park 20742, USA
    • University of Maryland
    • Department of Physics, University of Maryland, MD, USA; Canadian Institute for Advanced Research
    • Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD 20742, USA