Evidence for magnons and solitons in the one-dimensional S = 1/2 antiferromagnet Yb4As3

M. Lang, M. Köppen, P. Gegenwart, T. Cichorek, P. Thalmeier, F. Steglich, A. Ochiai

研究成果: Conference article査読

1 被引用数 (Scopus)

抄録

By means of low-temperature measurements of the specific heat, C, and thermal expansion, α = 1-1∂l/∂T, the magnetic properties of the quasi-one-dimensional (quasi-1D), S = 1/2 Heisenberg antiferromagnet Yb4As3 were investigated. In finite magnetic fields distinct anomalies were found which are pronounced differently strongly in both quantities: (i) the in-T linear contribution dominating the low-T specific heat becomes reduced with field and (ii) a peak is induced at slightly higher temperatures. The latter feature being much more pronounced in α(T, B) is well described by the classical sine-Gordon (SG) soliton solution of a ID Heisenberg antiferromagnet with a weak easy-plane anisotropy.

本文言語English
ページ(範囲)458-459
ページ数2
ジャーナルPhysica B: Condensed Matter
281-282
DOI
出版ステータスPublished - 2000
外部発表はい
イベントYamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99) - Nagano, Japan
継続期間: 1999 8月 241999 8月 28

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 電子工学および電気工学

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