1/3 Magnetization anomaly in triangular spin prism

Yugo Oshima, Hiroyuki Nojiri, Keisuke Fukaya, Toshihiro Yamase

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

A high-field magnetization process for the triangular spin prism Na 17[Mn6(H2O)2(AsW9O 34)2-(AsW6O26)]·38H 2O, which consists of six Mn2+ ions (S = 5/2), has been investigated. The magnetization at low temperature shows a 1/3 plateau around 5.5 T. It is examined by theoretical calculations using exact diagonalization. The experimental results can be reproduced, but only in a restricted parameter range. It implies that the plateau originates from a delicate balance of exchange couplings. We propose that the plateau is stabilized by some external perturbations, such as thermal/quantum fluctuations.

Original languageEnglish
Article number044706
Journaljournal of the physical society of japan
Volume77
Issue number4
DOIs
Publication statusPublished - 2008 Apr

Keywords

  • 1/3 Magnetization plateau
  • Magnetic anisotropy
  • Spin cluster
  • Thermal/quantum fluctuations
  • Triangular prism

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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