Response at finite temperature

We present recent developments using the temperature dependent effective potential technique (TDEP) to model strongly non-harmonic materials. The method employs model Hamiltonians that explicitly depend on temperature. I will present applications pertaining to thermal conductivity, inelastic neutron spectra and phase stabilities. In addition, we investigate the cross-terms between anharmonicity and non-adiabatic electron-phonon coupling and its influence on transport properties.