Zn-substitution effect on the thermal conductivity of the two-dimensional spin-gap system SrCu2(BO3)2 and the two-dimensional antiferromagnetic system Cu3B2O 6 single-crystals

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

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We have measured the thermal conductivity K in the two-dimensional plane of SrCu2-xZnx(BO3)2 (x = 0, 0.02) and Cu3-xZnxB2O6 (x = 0, 0.03) single-crystals grown by the floating-zone method. It has been found that the temperature dependence of k exhibits an anomalous peak in the spin-gap state of SrCu2(BO3)2 and also in the antiferromagnetically ordered state of Cu3B2O 6. Through the partial substitution of Zn for Cu, the peak does not change in the former, while it is strongly reduced in the latter. It is concluded that the peaks observed in SrCu2(BO3) 2 and Cu3B2O6 are caused by the enhancement of K due to phonons and magnons, respectively.

Original languageEnglish
Pages (from-to)910-911
Number of pages2
JournalPhysica B: Condensed Matter
Volume329-333
Issue numberII
DOIs
Publication statusPublished - 2003 May

Keywords

  • Antiferromagnetic order
  • CuB O
  • Single crystal
  • Spin gap
  • SrCu(BO)
  • Thermal conductivity
  • Zn-substitution effect

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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