Identification of Topological Phase Transitions in Kitaev Quantum Spin Liquids

ORAL

Abstract

We investigate physical quantities of a spin model and argue that magnetic field angle dependence and resonant inelastic X-ray scattering may probe topological phase transitions in Kitaev quantum spin liquids (KQSLs). By using exact-diagonalization, spin-wave theory, and parton mean field analysis, characteristic signatures of topological phase transitions in KQSLs are obtained in a spin model with the Kitaev, Heisenberg, and off-diagonal symmetric terms. Especially, we find qualitative differences between KQSLs and zig-zag ordered phases. We also apply our results to a candidate system α-RuCl3 and provide smoking-gun experiments.

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Presenters

  • Ji Heon Seong

    • Department of Physics, Korea Advanced Institute of Science and Technology

Authors

  • Ara Go

    • Center for Theoretical Physics of Complex Systems, Institute for Basic Science

  • Kyusung Hwang

    • Department of Physics, Korea Institute for Advanced Science

  • Beom Hyun Kim

    • Department of Computational Sciences, Korea Institute for Advanced Science
    • Korea Institute for Advanced Study

  • Ji Heon Seong

    • Department of Physics, Korea Advanced Institute of Science and Technology

  • Eun-Gook Moon

    • Department of physics, Korea Adv Inst of Sci & Tech
    • Department of Physics, Korea Advanced Institute of Science and Technology
    • Department of Physics, KAIST
    • KAIST