Presentation Information

4:00 PM - 4:15 PM JST(7:00 AM - 7:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[9p-S5-10]Observation of critical transient reflectivity in overdoped Bi-based cuprates

〇(M1)Reiji Tobise¹, Taisei Shimizu¹, Tohru Kurosawa¹, Satoshi Tsuchiya¹, Yasunori Toda¹ (1.Hokkaido Univ.)

Keywords:

pump probe spectroscopy,superconducting,quantum critical point

The existence of a quantum critical point (QCP) near the pseudogap endpoint in cuprate high-T_c superconductors has been suggested by several studies, but no definitive conclusion has yet been reached. In this study, we performed time-resolved pump–probe spectroscopy on overdoped (Bi,Pb)₂Sr₂CuO_6+δ (Pb-Bi2201) and found that the quasiparticle relaxation time exhibits a critical power-law temperature dependence expected in the vicinity of a QCP.

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