Studenyak, I.P.; Rushchanskii, K.Z.; Buchuk, R.Yu.; Stephanovich, V.O.
(Condensed Matter Physics, 2007)
The anomalous temperature behavior of the Raman scattering bands at superionic phase transition of Cu₆PS₅Br is revealed. Using density functional perturbation theory within local density approximation, ab initio long-wavelength ...