Revised phase diagram of the high- Tc cuprate superconductor Pb-doped Bi2Sr2CaCu2O8+δ revealed by anisotropic transport measurements

Although phase diagrams can be leveraged to investigate high transition temperature (high-Tc) superconductivity, the issue has not been discussed thoroughly. In this study, we elucidate the phase diagram of the overdoped side of high-Tc cuprates via systematic anisotropic transport measurements for...

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Bibliographic Details
Published in:Physical review. B 2022-02, Vol.105 (8)
Main Authors: Harada, Keiichi, Teramoto, Yuki, Usui, Tomohiro, Itaka, Kenji, Fujii, Takenori, Noji, Takashi, Taniguchi, Haruka, Matsukawa, Michiaki, Ishikawa, Hajime, Kindo, Koichi, Dessau, Daniel S., Watanabe, Takao
Format: Article
Language:English
Subjects:
annealing
Boltzmann theory
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
cuprates
electrical conductivity
high-temperature superconductors
impurities in superconductors
MATERIALS SCIENCE
pseudogap
resistivity measurements
single crystal materials
superconducting fluctuations
superconducting gap
superconducting phase transition
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Summary:Although phase diagrams can be leveraged to investigate high transition temperature (high-Tc) superconductivity, the issue has not been discussed thoroughly. In this study, we elucidate the phase diagram of the overdoped side of high-Tc cuprates via systematic anisotropic transport measurements for Pb-doped Bi-2212 single crystals. We demonstrate that the characteristic temperatures of the “weak” pseudogap opening and electronic coherence cross each other at a critical doping level, while those of the “strong” pseudogap merges into that of superconducting fluctuations above the critical doping level. Her the results indicate the importance of Mottness in high-Tc superconductivity.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.105.085131