TAMU Homepage TAMU Libraries Homepage TAMU Digital Library Homepage

Gap anisotropy and universal pairing scale in a spin-fluctuation model of cuprate superconductors

Show full item record

Title: Gap anisotropy and universal pairing scale in a spin-fluctuation model of cuprate superconductors
Author: Abanov, Artem; Chubukov, A. V.; Norman, M. R.
Abstract: 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.
Description: Journals published by the American Physical Society can be found at http://journals.aps.org/
Publisher: American Physical Society
Subject: d-wave superconductivity
exchange interactions (electron)
Fermi surface
fluctuations in superconductors
high-temperature superconductors
spin fluctuations
2-DIMENSIONAL HUBBARD-MODEL
PHASE FLUCTUATIONS
FERMI-LIQUID
T-C
Physics
Department: Physics and Astronomy
URI: http://dx.doi.org/10.1103/PhysRevB.78.220507
Date: 2008

Citation

Artem Abanov, A. V. Chubukov and M. R. Norman. Phys.Rev.B 78 220507 2008."Copyright (2008) by the American Physical Society."

Files in this item

Files Size Format View
PhysRevB.78.220507.pdf 146.1Kb PDF View/Open

This item appears in the following Collection(s)

Show full item record