Title: Quantum phase transition from superconducting to insulating-like state in a pressurized cuprate superconductor

Journal Article · · Nature Physics
 [1]; ORCiD logo [2];  [1]; ORCiD logo [3];  [4];  [5];  [3];  [3];  [1];  [3];  [1]; ORCiD logo [1]; ORCiD logo [1];  [1]; ORCiD logo [3]; ORCiD logo [6];  [3]; ORCiD logo [6]
  1. Chinese Academy of Sciences (CAS), Beijing (China)
  2. Chinese Academy of Sciences (CAS), Beijing (China); Songshan Lake Materials Lab., Dongguan (China)
  3. Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Chinese Academy of Sciences, Beijing (China)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States)
  5. Max-Planck-Inst. für Festkörperforschung, Stuttgart (Germany)
  6. Chinese Academy of Sciences (CAS), Beijing (China); Songshan Lake Materials Lab., Dongguan (China); Univ. of Chinese Academy of Sciences, Beijing (China)

Copper oxide superconductors continue to fascinate the communities of condensed matter physics and material sciences because they host the highest ambient-pressure superconducting transition temperature and unconventional electronic behaviour that are not fully explained. Searching for universal links between the superconducting state and its normal metallic state is believed to be an effective approach to elucidate the underlying mechanism of superconductivity. One of the common expectations for copper oxide superconductors is that a metallic phase will appear after the superconductivity is entirely suppressed by chemical doping or the application of a magnetic field9. Here we report the first observation of a quantum phase transition from a superconducting state to an insulating-like state as a function of pressure in Bi2Sr2CaCu2O8+δ (Bi2212) superconductors with two CuO2 planes in a unit cell for doping below, at and above a level that achieves the highest transition temperature. We also find the same phenomenon in related compounds with a single CuO2 plane as well as three CuO2 planes in a unit cell. This apparently universal phenomenon poses a challenge for achieving a unified understanding of the mechanism of high-temperature superconductivity.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012704
OSTI ID:
1855090
Report Number(s):
BNL-222852-2022-JAAM
Journal Information:
Nature Physics, Journal Name: Nature Physics Vol. 18; ISSN 1745-2473
Publisher:
Nature Publishing Group (NPG)Copyright Statement
Country of Publication:
United States
Language:
English

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