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Neutron-scattering evidence for a periodically modulated superconducting phase in the underdoped cuprate La1.905Ba0.095CuO4

Journal Article · · Physical Review Letters
 [1];  [2];  [2];  [3];  [1];  [1];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Mater Physics and Materials Science Dept.
  2. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States). Center for Neutron Research.
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical and Engineering Materials Div.
+ Show Author Affiliations
The role of antiferromagnetic spin correlations in high-temperature superconductors remains a matter of debate. We present inelastic neutron-scattering evidence that gapless spin fluctuations coexist with superconductivity in La1.905Ba0.095CuO4. Furthermore, we observe that both the low-energy magnetic spectral weight and the spin incommensurability are enhanced with the onset of superconducting correlations. We propose that the coexistence occurs through intertwining of spatial modulations of the pair wave function and the antiferromagnetic correlations. This proposal is also directly relevant to sufficiently underdoped La2-xSrxCuO4 and YBa2Cu3O6+x.
Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC02-98CH10886
OSTI ID:
1169022
Alternate ID(s):
OSTI ID: 1162086
OSTI ID: 1180410
OSTI ID: 1182487
Report Number(s):
BNL--107341-2015-JA; BNL-106249-2014-JA; BNL-106249-2014-JAAM; KC0201060
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 17 Vol. 113; ISSN 0031-9007; ISSN PRLTAO
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (3)

Charge density wave memory in a cuprate superconductor journal March 2019
Neutron scattering study of spin ordering and stripe pinning in superconducting La 1.93 Sr 0.07 CuO 4 journal November 2015
Distinct Nature of Static and Dynamic Magnetic Stripes in Cuprate Superconductors journal January 2018

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