[25p-D316-1~14] 3.6 Ultrashort-pulse and high-intensity lasers

[25p-D316-13] Coherent quench spectroscopy of cuprate superconductors Bi2201

〇Toshihiro Akiba¹, Satoshi Tsuchiya¹, Yasunori Toda¹, Tohru Kurosawa², Migaku Oda² (1.AP. Hokkaido. Univ., 2.P. Hokkaido. Univ.)

Keywords:coherent quench spectroscopy, superconductivity, time-resolved spectroscopy

The pseudogap (PG) in cuprate superconductors has been studied using various spectroscopic techniques as a key to elucidate the mechanism of high-Tc superconductivity. Since the coherent quench spectroscopy used in this study is capable of observing the formation dynamics of superconductivity (SC) and PG, new insights into the correlation between them are expected. In order to observe the correlation between SC and PG, the separation of each quasiparticle dynamics is important. We have focused on the difference in the quasiequilibrium time of each quasiparticle in Bi2201 and have realized the correlation dynamics measurements using coherent quench spectroscopy.