Pairing Mechanism in the Two-Dimensional Hubbard Model

Details Pairing Mechanism in the Two-Dimensional Hubbard Model Pairing Mechanism in the Two-Dimensional Hubbard Model

1996-06-28

arxiv.org/abs/cond-mat/9606217v1

Physics

Condensed Matter

Latex, uses lprocldpf and epsf, 5 pages and 4 figures, to be published in the proceedings of the "10th Anniversary HTS Worksho

Scientific paper

Here we discuss Quantum Monte Carlo results for the magnetic susceptibility, single-particle spectral weight and the irreducible particle-particle interaction vertex of the two-dimensional Hubbard model. In the doped system, as the temperature is lowered below J=4t^2/U, short-range antiferromagnetic correlations develop. These lead to a narrow low-energy quasiparticle band with a large Fermi surface and a particle-particle vertex which increases at large momentum transfer, which favor d_{x^2-y^2}-pairing.

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