Bulletin of the American Physical Society
APS March Meeting 2023
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session A37: Superconductivity and fluctuations in overdoped cuprates
8:00 AM–11:00 AM,
Monday, March 6, 2023
Room: Room 233
Sponsoring Unit: DCMP
Chair: Myoung-Hwan Kim, Texas Tech University
Abstract: A37.00001 : Unconventional spectral signature of Tc in a pure d-wave superconductor*
8:00 AM–8:36 AM
In this talk, I will present the missing piece of the puzzle revealed by high-precision photoemission spectroscopy [1, 2]. Focusing on overdoped Bi2212 above the pseudogap critical doping , we observe a pure d-wave gap that evolves smoothly across Tc free from the interference of competing orders. On the other hand, the “filling” rate of the gap is found to sharply peak at Tc and create the thermodynamic anomaly across the phase transition. I will discuss the implications of our results in the context of recent progress on overdoped cuprates.
 Chen, Hashimoto et al., Nature 601, 562 (2022)
 He, Chen, Li et al., PRX 11, 031068 (2021)
 Chen, Hashimoto et al., Science 366, 1099 (2019)
*This work is supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, under contract no. DE-AC02-76SF00515, and under contract no. DE-AC02-05-CH11231 within the Quantum Materials Program (KC2202).
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