Mode anharmonicity in molecular crystals studied by piezomodulated Raman spectrosocpy

Authors

K.M. White, University of Nebraska - Lincoln
Craig J. Eckhardt, University of Nebraska - LincolnFollow

Date of this Version

August 1987

Comments

Published by Am Physical Soc. Phys. Rev. Lett. 59, 574 - 577 (1987). Copyright 1987. Permission to use. http://www.aps.org/.

Abstract

Piezomodulated Raman scattering is used to determine the extent of anharmonicity, the phonon-phonon coupling, and the presence of modes involved in the phase transition of 1,2,4,5-tetrabromobenzene. The experiments support earlier theoretical predictions and demonstrate that piezomodulated Raman spectroscopy is an important new approach to the experimental study of lattice dynamics.