Thermal Conductivity of the Two-Dimensional Spin-Gap System SrCu2(BO3)2 in Magnetic Fields

Kazutaka Kudo, Takashi Noji, Yoji Koike, Terukazu Nishizaki, Norio Kobayashi

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

We have measured the thermal conductivity of the two-dimensional spin-gap system SrCu2(BO3)2 single crystal in magnetic fields up to 14T. In zero field, both the in-plane and out-of-plane thermal conductivities exhibit anomalous enhancement at low temperatures below ∼ 11K. The enhancement is suppressed with increasing magnetic field. The enhancement in zero field is attributed to the increase of the thermal conductivity due to phonons, which is caused by the suppression of the phonon-magnon scattering owing to the spin-gap formation. The suppression of the enhancement by the application of magnetic field is explained by the reduction of the spin gap.

Original languageEnglish
Pages (from-to)1448-1451
Number of pages4
Journaljournal of the physical society of japan
Volume70
Issue number6
DOIs
Publication statusPublished - Jun 1 2001
Externally publishedYes

Keywords

  • Phonon-magnon scattering
  • SrCu(BO)
  • Thermal conductivity
  • Two-dimensional spin gap system

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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