Observation of Competing Order in a High-$T_c$ Superconductor with Femtosecond Optical Pulses

Elbert E. M. Chia, Jian-Xin Zhu, D. Talbayev +5

We present studies of the photoexcited quasiparticle dynamics in Tl${}_2$Ba${}_2$Ca${}_2$Cu${}_3$O${}_y$ (Tl-2223) using femtosecond optical techniques. Deep into the superconducti…