Influence of interchain-coupling effects on the low-T properties of the one-dimensional S = 1/2 Heisenberg antiferromagnet Yb4As3

Hidekazu Aoki, Tomasz Cichorek, Philipp Gegenwart, Jeroen Custers, Michael Lang, Akira Ochiai, Frank Steglich

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

Abstract

We have investigated the difference in the low-T specific heat, C(T,B), of single- and multi-domain Yb4As3 crystals in magnetic fields B ≤ 4 T. Upon increasing field, which was applied parallel to the trigonal axis, the C(T)/T values of the single-domain sample have been found to be less reduced than that of the multi-domain one. Furthermore, a minimum value of C(T)/T which is unaffected at B ≥ 1 T is observed for the single-domain sample around 0.25 K. This behavior cannot be explained by the S = 1/2 Heisenberg antiferromagnet with the intrachain coupling determined by the inelastic neutron scattering. The interchain coupling appears to be responsible for the reported C(T)/T behavior below 1 K.

Original languageEnglish
Pages (from-to)367-369
Number of pages3
JournalPhysica B: Condensed Matter
Volume312-313
DOIs
Publication statusPublished - 2002 Mar
EventInternational Conference on Strongly Correlated Electrons - Ann Arbor, MI, United States
Duration: 2002 Aug 62002 Aug 6

Keywords

  • Interchain coupling
  • Sine-Gordon model
  • Spin-glass anomaly
  • YbAs

ASJC Scopus subject areas

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

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