Ultrafast x-ray scattering reveals composite amplitude collective mode in the Weyl charge density wave material (TaSe${}_4$)${}_2$I

Quynh L. Nguyen, Ryan A. Duncan, Gal Orenstein +27

We report ultrafast x-ray scattering experiments of the quasi-1D charge density wave (CDW) material (TaSe${}_4$)${}_2$I following photoexcitation with femtosecond infrared laser pulses…