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ISSP UL scientific workshop (22.11.2017.) Phonons in WS2 crystal


On November 22 at 13:00 at the conference room on the 2nd floor of the UL ISSP, Ķengaraga iela 8, Robert A. Evarestov, (St. Petersburg State University, Russia) will give a talk entitled “Phonons in WS2 crystal”.

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.