New observations concerning the low-temperature properties of the carrier-poor heavy-fermion system Yb4As3

R. Helfrich, M. Köppen, M. Lang, F. Steglich, A. Ochiai

研究成果: Article査読

34 被引用数 (Scopus)

抄録

We report low-temperature specific-heat and thermal-expansion results on the carrier-poor system Yb4As3 as well as Yb4(As1-yXy)3, X: P, Sb. We infer that Yb4As3 behaves as a two-fluid system with almost decoupled spin and charge excitations. Quasi-one-dimensional spin excitations within S = 1/2 Heisenberg chains of Yb3+ ions formed in the charge-ordered state dominate the low-temperature thermodynamic properties. The effect of a magnetic field is to open a (pseudo-)gap in the low-energy spin-excitation spectrum. The Grüneisen parameter shows rather anomalous temperature and field dependences.

本文言語English
ページ(範囲)309-310
ページ数2
ジャーナルJournal of Magnetism and Magnetic Materials
177-181
PART 1
DOI
出版ステータスPublished - 1998 1
外部発表はい

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

フィンガープリント 「New observations concerning the low-temperature properties of the carrier-poor heavy-fermion system Yb<sub>4</sub>As<sub>3</sub>」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル