Superconducting Fluctuations in Overdoped
Abstract
Fluctuating superconductivity - vestigial Cooper pairing in the resistive state of a material - is usually associated with low dimensionality, strong disorder or low carrier density. Here, we report single particle spectroscopic, thermodynamic and magnetic evidence for persistent superconducting fluctuations in heavily hole-doped cuprate superconductor Bi$$_2$$Sr$$_2$$CaCu$$_2$$O$$_{8+\delta}$$ ($$T_c$$ = 66~K) despite the high carrier density. With a sign-problem free quantum Monte Carlo calculation, we show how a partially flat band at ($$\pi$$,0) can help enhance superconducting phase fluctuations. Finally, we discuss the implications of an anisotropic band structure on the phase-coherence-limited superconductivity in overdoped cuprates and other superconductors.
- Authors:
- Publication Date:
- Research Org.:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; National Science Foundation (NSF); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR). Scientific Discovery through Advanced Computing (SciDAC); National Key R&D Program of the MOST; National Natural Science Foundation of China (NSFC); Gordon and Betty Moore Foundation (GBMF); Miller Institute for Basic Research in Science
- OSTI Identifier:
- 1822958
- Alternate Identifier(s):
- OSTI ID: 1811706; OSTI ID: 1829211; OSTI ID: 1877036
- Grant/Contract Number:
- AC02-76SF00515; AC02-05-CH11231; AC02-05CH11231; ECCS-1542152; 2017YFA0303001; GBMF4545; 11888101
- Resource Type:
- Published Article
- Journal Name:
- Physical Review. X
- Additional Journal Information:
- Journal Name: Physical Review. X Journal Volume: 11 Journal Issue: 3; Journal ID: ISSN 2160-3308
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
He, Yu, Chen, Su-Di, Li, Zi-Xiang, Zhao, Dan, Song, Dongjoon, Yoshida, Yoshiyuki, Eisaki, Hiroshi, Wu, Tao, Chen, Xian-Hui, Lu, Dong-Hui, Meingast, Christoph, Devereaux, Thomas P., Birgeneau, Robert J., Hashimoto, Makoto, Lee, Dung-Hai, and Shen, Zhi-Xun. Superconducting Fluctuations in Overdoped Bi 2 Sr 2 CaCu 2 O 8 + δ. United States: N. p., 2021.
Web. doi:10.1103/PhysRevX.11.031068.
He, Yu, Chen, Su-Di, Li, Zi-Xiang, Zhao, Dan, Song, Dongjoon, Yoshida, Yoshiyuki, Eisaki, Hiroshi, Wu, Tao, Chen, Xian-Hui, Lu, Dong-Hui, Meingast, Christoph, Devereaux, Thomas P., Birgeneau, Robert J., Hashimoto, Makoto, Lee, Dung-Hai, & Shen, Zhi-Xun. Superconducting Fluctuations in Overdoped Bi 2 Sr 2 CaCu 2 O 8 + δ. United States. https://doi.org/10.1103/PhysRevX.11.031068
He, Yu, Chen, Su-Di, Li, Zi-Xiang, Zhao, Dan, Song, Dongjoon, Yoshida, Yoshiyuki, Eisaki, Hiroshi, Wu, Tao, Chen, Xian-Hui, Lu, Dong-Hui, Meingast, Christoph, Devereaux, Thomas P., Birgeneau, Robert J., Hashimoto, Makoto, Lee, Dung-Hai, and Shen, Zhi-Xun. Tue .
"Superconducting Fluctuations in Overdoped Bi 2 Sr 2 CaCu 2 O 8 + δ". United States. https://doi.org/10.1103/PhysRevX.11.031068.
@article{osti_1822958,
title = {Superconducting Fluctuations in Overdoped Bi 2 Sr 2 CaCu 2 O 8 + δ},
author = {He, Yu and Chen, Su-Di and Li, Zi-Xiang and Zhao, Dan and Song, Dongjoon and Yoshida, Yoshiyuki and Eisaki, Hiroshi and Wu, Tao and Chen, Xian-Hui and Lu, Dong-Hui and Meingast, Christoph and Devereaux, Thomas P. and Birgeneau, Robert J. and Hashimoto, Makoto and Lee, Dung-Hai and Shen, Zhi-Xun},
abstractNote = {Fluctuating superconductivity - vestigial Cooper pairing in the resistive state of a material - is usually associated with low dimensionality, strong disorder or low carrier density. Here, we report single particle spectroscopic, thermodynamic and magnetic evidence for persistent superconducting fluctuations in heavily hole-doped cuprate superconductor Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ ($T_c$ = 66~K) despite the high carrier density. With a sign-problem free quantum Monte Carlo calculation, we show how a partially flat band at ($\pi$,0) can help enhance superconducting phase fluctuations. Finally, we discuss the implications of an anisotropic band structure on the phase-coherence-limited superconductivity in overdoped cuprates and other superconductors.},
doi = {10.1103/PhysRevX.11.031068},
journal = {Physical Review. X},
number = 3,
volume = 11,
place = {United States},
year = {Tue Sep 28 00:00:00 EDT 2021},
month = {Tue Sep 28 00:00:00 EDT 2021}
}
https://doi.org/10.1103/PhysRevX.11.031068
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