Monte Carlo study of half-magnetization plateau and magnetic phase diagram in pyrochlore antiferromagnetic Heisenberg model

Yukitoshi Motome, K. Penc, Nic Shannon

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

The antiferromagnetic Heisenberg model on a pyrochlore lattice under external magnetic field is studied by classical Monte Carlo simulation. The model includes bilinear and biquadratic interactions; the latter effectively describes the coupling to lattice distortions. The magnetization process shows a half-magnetization plateau at low temperatures, accompanied with strong suppression of the magnetic susceptibility. Temperature dependence of the plateau behavior is clarified. Finite-temperature phase diagram under the magnetic field is determined. The results are compared with recent experimental results in chromium spinel oxides.

Original languageEnglish
Pages (from-to)57-61
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
Volume300
Issue number1
DOIs
Publication statusPublished - May 2006

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Phase diagrams
plateaus
Magnetization
phase diagrams
magnetization
magnetic fields
Magnetic fields
spinel
chromium
retarding
Chromium
Magnetic susceptibility
magnetic permeability
Temperature
Oxides
temperature dependence
oxides
simulation
interactions
temperature

Keywords

  • Bilinear-biquadratic Heisenberg model
  • Geometrical frustration
  • Magnetization plateau
  • Monte Carlo simulation
  • Pyrochlore lattice

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Monte Carlo study of half-magnetization plateau and magnetic phase diagram in pyrochlore antiferromagnetic Heisenberg model. / Motome, Yukitoshi; Penc, K.; Shannon, Nic.

In: Journal of Magnetism and Magnetic Materials, Vol. 300, No. 1, 05.2006, p. 57-61.

Research output: Contribution to journalArticle

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