Role of single-ion excitations in the mixed-spin quasi-one-dimensional quantum antiferromagnet

A. Zheludev, S. Maslov, T. Yokoo, J. Akimitsu

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Inelastic neutron scattering experiments on (Formula presented) single crystals and powder samples are used to study the dynamic coupling of one-dimensional Haldane-gap excitations in the (Formula presented)-chains to local crystal-field transitions, associated with the rare earth ions. Substantial interference between the two types of excitations is observed even in the one-dimensional paramagnetic phase. Despite that, the results provide solid justification for the previously proposed “static staggered field” model for (Formula presented) nickelates. The observed behavior is qualitatively explained by a simple chain-random-phase-approximation model.

Original languageEnglish
Pages (from-to)11601-11612
Number of pages12
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume61
Issue number17
DOIs
Publication statusPublished - Jan 1 2000
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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