High-field ground-state level crossing and magnetic susceptibility of an {Fe-8}-cubane cluster

Akira Matsuo, Koichi Kindo, Hiroyuki Nojiri, Larry Engelhardt, Marshall Luban, Euan K. Brechin, Ian A. Gass

Research output: Contribution to journalArticlepeer-review

Abstract

The differential susceptibility, dM/dH, of an {Fe-8}-cubane cluster has been measured for magnetic fields up to 54 T at 1.3 and 4.2 K using a pulsed-field technique. The data feature a single strong peak at 42 +/- 1 T, corresponding to a ground state level crossing at that field, in excellent agreement with the predicted value, 41 +/- 1 T, obtained using a Heisenberg model of the cluster. The theoretical model also accurately accounts for detailed features of the temperature and field dependence of the width and height of the observed peak.

Original languageEnglish
Article number092401
Pages (from-to)-
Number of pages3
JournalPhysical Review B
Volume80
Issue number9
DOIs
Publication statusPublished - Sep 2009

Keywords

  • energy level crossing
  • ferromagnetic materials
  • ground states
  • Heisenberg model
  • iron compounds
  • magnetic susceptibility
  • nanostructured materials
  • organic compounds

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