Department of Physics Papers

Document Type

Journal Article

Date of this Version

9-15-1992

Publication Source

Physical Review B

Volume

46

Issue

12

Start Page

7878

Last Page

7896

DOI

10.1103/PhysRevB.46.7878

Abstract

The lattice dynamics of C60 has been studied first by means of group theory and then by diagonalizing the dynamical matrix for two recently proposed intermolecular potentials. The libron and phonon energies are calculated as a function of momentum along various symmetry directions with and without phonon–libron interactions. The effects of these interactions on the density of states are also discussed. Explicit expressions for the energies of these modes at zero wave vector are given. It is found that both potential models have nearly the same phonon but a somewhat different libron spectrum. The calculated libron energies agree reasonably well with currently available experimental results.

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Date Posted: 12 August 2015

This document has been peer reviewed.