Theory of Jahn-Teller Transitions View Full Text


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Chapter Info

DATE

1977

AUTHORS

H. Thomas

ABSTRACT

In crystals containing ions with orbitally degenerate ground state, the interactions of the electron orbitals with the ligand displacements have a destabilizing effect on the ionic configuration: Jahn-Teller (JT) effect. This provides a mechanism for structural phase transitions in crystals which would be stable in the absence of electron-ion interaction. We give an introduction into the theory of such JT-induced transitions, with particular emphasis on a classification of the various types of JT-coupling and their dynamic characteristics. The dynamics of the cooperative JT effect manifests itself in bands of collective vibronic modes arising from transitions between low-lying vibronic levels of the JT complexes, and an analysis of the collective dynamic behaviour requires a thorough understanding of the vibronic excitations of a single JT complex. More... »

PAGES

245-270

Book

TITLE

Electron-Phonon Interactions and Phase Transitions

ISBN

978-1-4615-8923-5
978-1-4615-8921-1

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/978-1-4615-8921-1_15

DOI

http://dx.doi.org/10.1007/978-1-4615-8921-1_15

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1052719166


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