Evolution of coherent collective modes through consecutive CDW transitions in (PO${}_2$)${}_4$(WO${}_3$)${}_{12}$ mono-phosphate tungsten bronze

L. Stojchevska, M. Borovšak, P. Foury - Leylekian +3

All optical femtosecond relaxation dynamics in a single crystal of mono-phosphate tungsten bronze (PO${}_2$)${}_4$(WO${}_3$)${}_{2m}$ with alternate stacking m=6 of WO${}_3$ layers w…