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Title: What is really extraordinary in cuprate superconductors?

Journal Article · · Physica. C, Superconductivity
ORCiD logo [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:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; Gordon and Betty Moore Foundation; USDOE
Grant/Contract Number:
SC0012704; GBMF4410
OSTI ID:
1430864
Alternate ID(s):
OSTI ID: 1702800
Report Number(s):
BNL-203407-2018-JAAM; TRN: US1802507
Journal Information:
Physica. C, Superconductivity, Vol. 558; ISSN 0921-4534
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

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A strongly inhomogeneous superfluid in an iron-based superconductor journal July 2019

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