Berry Phase and Ground State Symmetry in H x h Dynamical Jahn-Teller Systems
Materials Science
2009-10-31 v1
Abstract
Due to the ubiquitous presence of a Berry phase, in most cases of dynamical Jahn-Teller systems the symmetry of the vibronic ground state is the same as that of the original degenerate electronic state. As a single exception, the linear H x h icosahedral model, relevant to the physics of C60 cations, is determined by an additional free parameter, which can be continuously tuned to eliminate the Berry phase from the low-energy closed paths: accordingly, the ground state changes to a totally-symmetric nondegenerate state.
Keywords
Cite
@article{arxiv.cond-mat/9907010,
title = {Berry Phase and Ground State Symmetry in H x h Dynamical Jahn-Teller Systems},
author = {Nicola Manini and Paolo De Los Rios},
journal= {arXiv preprint arXiv:cond-mat/9907010},
year = {2009}
}
Comments
RevTex, 4 pages, 3 figures