Low-temperature thermal conductivity of the frustrated S=3/2 Heisenberg helimagnet ZnCr2Se4

ORAL

Abstract

We report thermal conductivity measurements on single crystals of ZnCr2Se4 in the temperature range 5 K ≤ T ≤ 300 K. This compound undergoesa,b a helical antiferromagnetic transition accompanied by a cubic-tetragonal structural modification at TN ≈ 21 K. Its magnetic sublattice comprises spin-3/2 Cr3+ ions in a geometrically-frustrated pyrochlore structure. We will discuss thermal conductivity measurements along various crystallographic directions, the overall magnitude of which are higher than that of polycrystalsc by a factor of 5.

a R. Plumier, J. Phys. 27, 213 (1966).
b V. Felea et al., Phys. Rev. B 86, 104420 (2012).
c X. Chen and Z. Yang, AIP Advances 6, 056212 (2016).

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Presenters

  • Dharmendra Shukla

    Physics, Univ of Miami

Authors

  • Dharmendra Shukla

    Physics, Univ of Miami

  • Joshua Cohn

    Physics, Univ of Miami

  • Dmytro Inosov

    TU Dresden, Institut für Festkörper- und Materialphysik, Technische Universität Dresden

  • Vladimir Tsurkan

    Experimental Physics V, Center for Electronic Correlations and Magnetism, University of Augsburg

  • Alois Loidl

    Experimental Physics V, Center for Electronic Correlations and Magnetism, University of Augsburg, Experimental Physics V, University of Augsburg