Phonons in WS2 crystal

Robert A. Evarestov, (St. Petersburg State University, Russia) speaks at scientific seminar of the Institute of Solid State Physics UL on November 22 at 13:00 at ISSP UL, Ķengaraga street 8, 2nd floor hall

Phonon symmetry in WS2 crystal ( bulk, monolayer and poly-layer slabs) is analyzed using the site symmetry approach for 3D space and 2D layer groups. Results of phonon frequencies hybrid DFT calculations are presented. The changes in Raman and IR active frequencies are considered for slabs with increasing thickness.