Theory of Spontaneous Polarization of Endohedral Fullerenes

Abstract

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.

4 pages, REVTEX, 1 Postscript figure. [Phys. Rev. Lett. (in press)]

References in corpus (1)

• Stability and Teller's Theorem: A Thomas-Fermi Theory of Fullerenes

Cited by in corpus (3)

• Hyperfine structure of Sc@C82 from ESR and DFT
• Endohedral Impurities in Carbon Nanotubes
• Vector Polarons in a Degenerate Electron System