Berry Phase and Ground State Symmetry in H x h Dynamical Jahn-Teller Systems

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.

RevTex, 4 pages, 3 figures

References in corpus (4)

• Electron--Vibron Interactions and Berry Phases in Charged Buckminsterfullerene: Part I
• Dynamical Jahn-Teller Effect and Berry Phase in Positively Charged Fullerene I. Basic Considerations
• Exact zero-point energy shift in the $e\otimes (nE)$, $t\otimes (nH)$ many modes dynamic Jahn-Teller systems at strong coupling
• Implications of non-feasible transformations among icosahedral $h$ orbitals

Cited by in corpus (7)

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• Jahn-Teller Spectral Fingerprint in Molecular Photoemission: C60
• Coulomb couplings in positively charged fullerene
• Hund's rule Magnetism in C60 ions?
• Multiplet Structures of Charged Fullerenes
• Jahn-Teller distortions and excitation energies in C60(n+)
• Low-energy excitations of a linearly Jahn-Teller coupled orbital quintet