Interplay of electron-phonon coupling, pseudogap, and superconductivity in CsCa${}_2$Fe${}_4$As${}_4$F${}_2$ studied using ultrafast optical spectroscopy

Qi-Yi Wu, Chen Zhang, Bai-Zhuo Li +9

The quasiparticle relaxation dynamics of the iron-based superconductor CsCa${}_2$Fe${}_4$As${}_4$F${}_2$ ($T_c$ $\sim$ 29 K) were investigated using ultrafast optical spectroscopy. A pseud…