Instability of the ferromagnetic ground state in a quantum spin chain with competing interactions

I. Harada, T. Tonegawa

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The study of two-magnon spectra in a ferromagnetic chain with competing interactions suggests that the soft two-magnon bound state leads the ferromagnetic ground state to a new ground state with intermediate magnetization. Numerical calculations for finite chains support this result. We discuss the new state by adopting a quasi-particle picture for the bound state.

Original languageEnglish
Pages (from-to)234-236
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume90-91
DOIs
Publication statusPublished - Jan 1 1990

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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