Journal
PHYSICAL REVIEW B
Volume 78, Issue 22, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.78.220507
Keywords
d-wave superconductivity; exchange interactions (electron); Fermi surface; fluctuations in superconductors; high-temperature superconductors; spin fluctuations
Funding
- Welch Foundation
- NSF [DMR 0604406]
- Office of Science
- U. S. DOE [DE-AC02-06CH11357]
Ask authors/readers for more resources
We consider the evolution of d(x)(2)-y(2) pairing, mediated by nearly critical spin fluctuations, with the coupling strength. We show that the onset temperature for pairing, T(*), smoothly evolves between weak and strong couplings passing through a broad maximum at intermediate coupling. At strong coupling, T(*) is of order of the magnetic exchange energy J. We argue that for all couplings, pairing is confined to the vicinity of the Fermi surface. We also find that thermal spin fluctuations only modestly reduce T(*), even at criticality, but they substantially smooth the gap anisotropy. The latter evolves with coupling being the largest at weak coupling.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available