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Metastable states at low temperature in spin crossover compounds in the framework of the atom-phonon coupling model

Authors
Journal
Polyhedron
0277-5387
Publisher
Elsevier
Publication Date
Volume
30
Issue
18
Identifiers
DOI: 10.1016/j.poly.2011.03.038
Keywords
  • Spin Crossover
  • Phase Transition

Abstract

Abstract In the current study we report on the unusual results obtained in the framework of the atom-phonon coupling model: two metastables states at low temperatures. These results can explain the experimental results reported by Ould Moussa et al. [9] and Matsumoto et al. [10]. This type of SCO behavior is due to the competition between the Light-Induced Excited Spin State Trapping (LIESST) effect, the elastic interaction between the molecules and the thermal activation. In order to determine the stability of the states founded at low temperature, the free energy F is presented for the case of the two step spin transition of a SCO compound.

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