The phenomenon of valence transition is investigated on the basis of a model which incorporates the electron-phonon interaction induced hybridisation between f and d bands. Finite temperature specific heat, magnetic intersite spin correlations are also studied. It is shown that strong EP interaction makes the first-order transition possible. A comparison is also made with results obtained previously.

Abstract

Das Phänomen des Valenz-Übergangs wird einem Modell untersucht, welches die durch Elektron-Phonon-Wechselwirkung induzierte Hybridisierung zwischen f- und d-Bändern enthält. Auch spezifische Wärme bei endlicher Temperatur sowie Spinkorrelationen werden untersucht. Es wird gezeigt, daß starke EP-Wechselwirkung Übergänge erster Ordnung ermöglicht. Ein Vergleich mit früheren Ergebnissen wird durchgeführt.

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Volume161, Issue2

1 October 1990

Pages 661-666

Role of Electron-Phonon Interaction Induced Hybridisation in Spin Included Mixed-Valence Phenomena

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Role of Electron-Phonon Interaction Induced Hybridisation in Spin Included Mixed-Valence Phenomena

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