Open AccessIcosahedralT 1 u T 1 g
Author(s) -
Arnout Ceulemans,
Liviu F. Chibotaru
Publication year - 1996
Publication title -
physical review. b, condensed matter
Language(s) - English
Resource type - Journals
eISSN - 1095-3795
pISSN - 0163-1829
DOI - 10.1103/physrevb.53.2460
Subject(s) - icosahedral symmetry , physics , hamiltonian (control theory) , jahn–teller effect , center (category theory) , crystallography , combinatorics , mathematical physics , quantum mechanics , mathematics , chemistry , ion , mathematical optimization
The T-1u+T-1g multimode Jahn-Teller problem in icosahedral symmetry is investigated. It is found that the pseudo-Jahn-Teller interaction between T-1u and T-1g can give rise to an increase of symmetry through the development of additional troughs in the space of ungerade modes. This result is related to a continuous group invariance of the Hamiltonian. The possible relevance to the Jahn-Teller instability of negatively charged fullerides is discussed.status: publishe
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