Neutron-scattering evidence for a periodically modulated superconducting phase in the underdoped cuprate La1.905Ba0.095CuO4
Journal Article
·
· Physical Review Letters
- Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Mater Physics and Materials Science Dept.
- National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States). Center for Neutron Research.
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical and Engineering Materials Div.
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)
- Grant/Contract Number:
- AC02-98CH10886; DMR-0944772; SC00112704
- OSTI ID:
- 1169022
- Alternate ID(s):
- OSTI ID: 1180410; OSTI ID: 1182487
- Report Number(s):
- BNL-106249-2014-JA; BNL-106249-2014-JAAM; BNL-107341-2015-JA; PRLTAO; R&D Project: PO010; KC0201060
- Journal Information:
- Physical Review Letters, Vol. 113, Issue 17; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 22 works
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