Raman Scattering Measurements of theEgOptical Phonon inV3Si

Abstract

We report Raman scattering measurements on the $E_{\mathrm{g}}$ (${{\Gamma }_{12}}^{+}$) optical phonon measured from 50-340 K on a single crystal of ${\mathrm{V}}_3$Si. This phonon line has an anomalous width, shape, and temperature dependence, suggesting direct coupling between the phonon and electronic excitations.