Nonequilibrium Quasiparticle Relaxation Dynamics in Single Crystals of Hole and Electron doped BaFe${}_2$As${}_2$

Darius H Torchinsky, James W. McIver, David Hsieh +4

We report on the nonequilibrium quasiparticle dynamics in BaFe${}_2$As${}_2$ on both the hole doped (Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$) and electron doped (BaFe${}_{2-y}$Co${}_y$As${}_2$) sides of…