Signatures of novel spin phases in thermal conductivity of the chiral skyrmion material Cu2OSeO3

ORAL

Abstract

We report measurements of thermal conductivity (κ) as a function of magnetic field in single crystals of the chiral skyrmion material Cu2OSeO3 in the temperature range 0.5 K ≤ T ≤ 15 K. Traversing phase boundaries associated with the low-temperature skyrmion and tilted conical spin phases, recently identified in small-angle neutron scattering studies,a,b gives rise to sharp signatures in κ(H) for H ||〈100〉that are attributed to changes in the magnon thermal conductivity. Different crystallographic orientations for the applied field and heat flow will be discussed.

a A. Chacon et al., Nature Phys. 14, 936 (2018).

b F. Qian et al., Sci. Adv. 3, 7323 (2018).

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Presenters

  • Artem Akopyan

    University of Miami

Authors

  • Artem Akopyan

    University of Miami

  • Narayan Prasai

    University of Miami, Physics, University of Miami

  • Benjamin Trump

    Johns Hopkins University

  • Guy G. Marcus

    Johns Hopkins University

  • Sunxiang Huang

    University of Miami

  • Tyrel McQueen

    Johns Hopkins University, Johns Hopkins Univ, Institute for Quantum Matter, Johns Hopkins University, Henry A. Rowland Department of Physics and Astronomy, Johns Hopkins University

  • Joshua Cohn

    University of Miami, Physics, University of Miami