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What is really extraordinary in cuprate superconductors?

Journal Article · · Physica. C, Superconductivity
 [1];  [2];  [1];  [2]
  1. Brookhaven National Laboratory (BNL), Upton, NY (United States); Yale Univ., New Haven, CT (United States)
  2. Brookhaven National Laboratory (BNL), Upton, NY (United States)
Over the course of three decades of intense study, apart from the exceptionally high critical temperature, many unusual properties of cuprates have been discovered, notably including resistivity linear in temperature, electronic Raman continuum and optical absorption extending throughout the infrared region, pseudogap, hour-glass spin excitation spectrum, etc. However, each of these features have been also observed in other materials, including some that are not even superconducting at all. Here, we describe an extensive experiment in which over 2,000 films of the La2-xSrxCuO4 have been synthesized and studied in detail over the course of the last twelve years. We argue here that, uniquely, in the cuprates an unusual superconducting state, that defies the standard BCS description, develops from an unusual metallic state, in which the rotational symmetry of the electron fluid is spontaneously broken.
Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
Gordon and Betty Moore Foundation; USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
Grant/Contract Number:
SC0012704
OSTI ID:
1430864
Alternate ID(s):
OSTI ID: 1702800
Report Number(s):
BNL--203407-2018-JAAM
Journal Information:
Physica. C, Superconductivity, Journal Name: Physica. C, Superconductivity Vol. 558; ISSN 0921-4534
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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