Phonon-spin scattering and magnetic heat transport in the quasi-one-dimensional spin- 12 antiferromagnetic chain compound CuSb2 O6

N. Prasai, A. Rebello, A. B. Christian, J. J. Neumeier, J. L. Cohn

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8 Scopus citations

Abstract

We report measurements of thermal conductivity (κ) on single crystals of the quasi-one-dimensional spin-12 anitferromagnetic chain compound CuSb2O6 and its nonmagnetic analog ZnSb2O6 in the temperature range 5K≤T≤300K. A substantially lower κ for CuSb2O6 compared to that of ZnSb2O6 has its origin in resonant phonon-spin scattering involving excitation of a two-level system (energyscale∼100K) associated with the onset of local spin order at T≤150K. Anisotropy in κ for the CuSb2O6 also emerges at T≤150 K and might be associated with a magnetic contribution to heat transport. A magnetic mean free path comparable to that of other spin-12 linear-chain compounds (∼0.3μm) is implied.

Original languageEnglish (US)
Article number054403
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume91
Issue number5
DOIs
StatePublished - Feb 11 2015

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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