%0 Journal Article
%T Theory of Spontaneous Polarization of Endohedral Fullerenes
%A Dennis P. Clougherty
%A Frederick G. Anderson
%J Physics
%D 1997
%I arXiv
%R 10.1103/PhysRevLett.80.3735
%X A pseudo-Jahn-Teller model describing central atom distortions is proposed for endohedral fullerenes of the form A@C$_{60}$ where A is either a rare gas or a metal atom. A critical (dimensionless) coupling $g_c$ is found, below which the symmetric configuration is stable and above which inversion symmetry is broken. Vibronic parameters are given for selected endohedral fullerenes.
%U http://arxiv.org/abs/cond-mat/9709186v2