Magnetic ordering, spin waves, and Haldane-gap excitations in linear-chain mixed-spin antiferromagnets

T. Yokoo, S. Raymond, A. Zheludev, S. Maslov, E. Ressouche

Research output: Contribution to journalArticlepeer-review

Abstract

Linear-chain nickelates with the composition (Formula presented) ((Formula presented) and (Formula presented)) are studied in a series of neutron-scattering experiments. Powder diffraction is used to determine the temperature dependence of the magnetic structure in all four systems. Single-crystal inelastic neutron scattering is employed to investigate the temperature dependence of the Haldane-gap excitations and low-energy spin waves in the (Formula presented) compound (Formula presented) The results of these experiments are discussed in the context of the “Haldane chain in a staggered field” model for (Formula presented) systems, and quantitative agreement with theory is obtained.

Original languageEnglish (US)
Pages (from-to)14424-14435
Number of pages12
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume58
Issue number21
DOIs
StatePublished - 1998
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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