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

研究成果: Article査読

25 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)1448-1451
ページ数4
ジャーナルjournal of the physical society of japan
70
6
DOI
出版ステータスPublished - 2001 6月 1

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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