Affiliation:
1. Department of Physics, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
Abstract
The expressions for the renormalized phonon group velocity (RPGV) has been developed from renormalized phonon dispersion relations obtained with the help of impurity-induced anharmonic quantum dynamics of phonons via Green’s functions. It is observed that RPGV shows dependence on doping, phonon frequency, temperature, and anharmonicity. The [Formula: see text] superconductor has been taken for model calculations to successfully apply the new results of RPGV.
Funder
Ministry of Human Resource Development (M.H.R.D.), New Delhi, India
Publisher
World Scientific Pub Co Pte Lt
Subject
Condensed Matter Physics,Statistical and Nonlinear Physics