Anharmonic Model for Phonon-Induced First-Order Transition in 1-D Spin-Crossover Solids(Condensed Matter and Statistical Physics)

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概要

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• We propose a new hamiltonian intended to mimic low-spin to high-spin transition in spin-crossover solids, that displays a vibrational-entropy-driven first order phase transition. The present model is based on the existence of anharmonic intersite coupling (dependent on the electronic state of the sites) which alters the stiffness of the vibrations in the high temperature phase (high spin). The present exactly solvable model, studied at one dimension, clearly demonstrates the existence of a first-order transition accompanied with hetero-phase fluctuations around the transition temperature at higher dimensions.

• 理論物理学刊行会の論文
• 2004-08-25

著者

• Boukheddaden Kamel

  Laboratoire De Magnetisme Et D'optique Universite De Versailles

• Boukheddaden Kamel

  Laboratoire De Magnetisms Et D'optique Cnrs-universite De Versailles

関連論文

• Structures of Metastable States in Phase Transitions with a High-Spin Low-Spin Degree of Freedom(Condensed Matter and Statistical Physics)
• Anharmonic Model for Phonon-Induced First-Order Transition in 1-D Spin-Crossover Solids(Condensed Matter and Statistical Physics)

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