Spin-reorientation transition of field-induced magnetic ordering phases in the anisotropic Haldane system

Hiroshi Miyazaki, Tomohiko Hiwasa, Masataka Oko, Isao Harada

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A possible spin-reorientation transition in field-induced magnetic ordering phases of the S = 1 Haldane system with large easy-plane anisotropy is proposed, using an effective Lagrangian formalism as well as the density matrix renormalization group method. Such a spin-reorientation transition is predicted in the case where the applied magnetic field is inclined from the easy axis of the anisotropy. We point out that this transition has a close connection with a variation of the order parameter even at zero temperature, although it is different from a quantum analog of the so-called spin-flop transition proposed for the system having a strong easy axis anisotropy. In connection with a novel phase observed recently in the Haldane system at high fields, we discuss possible implications for the field-induced magnetic ordering.

Original languageEnglish
Article number094708
Journaljournal of the physical society of japan
Volume75
Issue number9
DOIs
Publication statusPublished - Sep 1 2006

Keywords

  • Anisotropic Haldane chain
  • Field-induced phase transition
  • Spin-reorientation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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