- Author
-
W.O. Tromp
T. Benschop
J.-F. Ge
I. Battisti
K.M. Bastiaans
D. Chatzopoulos
A.H.M. Vervloet
S. Smit
E. van Heumen
M.S. Golden
Y. Huang
T. Kondo
T. Takeuchi
Y. Yin
J.E. Hoffman
M.A. Sulangi
J. Zaanen
M.P. Allan - Date
- 6-2023
- Title
- Puddle formation and persistent gaps across the non-mean-field breakdown of superconductivity in overdoped (Pb,Bi)2Sr2CuO6+δ
- Journal
- Nature Materials
- Volume | Issue number
- 22 | 6
- Pages (from-to)
- 703-709
- Number of pages
- 7
- Document type
- Article
- Faculty
- Faculty of Science (FNWI)
- Institute
- Institute of Physics (IoP)
Institute for Theoretical Physics Amsterdam (ITFA)
Van der Waals-Zeeman Institute (WZI) - Abstract
-
The cuprate high-temperature superconductors exhibit many unexplained electronic phases, but the superconductivity at high doping is often believed to be governed by conventional mean-field Bardeen–Cooper–Schrieffer theory. However, it was shown that the superfluid density vanishes when the transition temperature goes to zero, in contradiction to expectations from Bardeen–Cooper–Schrieffer theory. Our scanning tunnelling spectroscopy measurements in the overdoped regime of the (Pb,Bi)2Sr2CuO6+δ high-temperature superconductor show that this is due to the emergence of nanoscale superconducting puddles in a metallic matrix. Our measurements further reveal that this puddling is driven by gap filling instead of gap closing. The important implication is that it is not a diminishing pairing interaction that causes the breakdown of superconductivity. Unexpectedly, the measured gap-to-filling correlation also reveals that pair breaking by disorder does not play a dominant role and that the mechanism of superconductivity in overdoped cuprate superconductors is qualitatively different from conventional mean-field theory.
- URL
- go to publisher's site
- Other links
- Link to publication in Scopus
- Language
- English
- Note
- With supplementary file
- Related dataset
- Puddle formation and persistent gaps across the non-mean-field breakdown of superconductivity in overdoped (Pb,Bi)2Sr2CuO6+δ
- Persistent Identifier
- https://hdl.handle.net/11245.1/384e1f05-ecc7-4235-9dd4-d2ac9404bdbb
- Downloads
-
s41563-023-01497-1(Final published version)
- Supplementary materials
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