Physics – Condensed Matter – Superconductivity
Scientific paper
2009-01-29
Phys. Rev. B 80, 172505 (2009)
Physics
Condensed Matter
Superconductivity
5 pages, 4 figures
Scientific paper
10.1103/PhysRevB.80.172505
We examine the validity of the weak coupling spin-susceptibility "glue" approximation (SSGA) in a two-dimensional Hubbard model for cuprates. For comparison, we employ the well-established dynamical cluster approximation (DCA) with a quantum Monte Carlo algorithm as a cluster solver. We compare the leading eigenvalues and corresponding eigenfunctions of the DCA and SSGA pairing matrices. For realistic model parameters, we find that the SSGA fails to capture the leading pairing symmetries seen in the DCA. Furthermore, when the SSGA is improved through the addition of a term with d-wave symmetry, the strength of this additional term is found to be larger than that of the "glue" approximation.
Jarrell Mark
Khatami Ehsan
Macridin Alexandru
No associations
LandOfFree
Validity of the spin-susceptibility "glue" approximation for pairing in the two-dimensional Hubbard model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Validity of the spin-susceptibility "glue" approximation for pairing in the two-dimensional Hubbard model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Validity of the spin-susceptibility "glue" approximation for pairing in the two-dimensional Hubbard model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-424309