Structure of the Pairing Interaction in the Two-Dimensional Hubbard Model

T. A. Maier, M. S. Jarrell, and D. J. Scalapino
Phys. Rev. Lett. 96, 047005 – Published 2 February 2006

Abstract

Dynamic cluster Monte Carlo calculations for the doped two-dimensional Hubbard model are used to study the irreducible particle-particle vertex responsible for dx2y2 pairing in this model. This vertex increases with increasing momentum transfer and decreases when the energy transfer exceeds a scale associated with the Q=(π,π) spin susceptibility. Using an exact decomposition of this vertex into a fully irreducible two-fermion vertex and charge and magnetic exchange channels, the dominant part of the effective pairing interaction is found to come from the magnetic, spin S=1 exchange channel.

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  • Received 15 August 2005

DOI:https://doi.org/10.1103/PhysRevLett.96.047005

©2006 American Physical Society

Authors & Affiliations

T. A. Maier1,*, M. S. Jarrell2,†, and D. J. Scalapino3,‡

  • 1Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6164, USA
  • 2Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221, USA
  • 3Department of Physics, University of California, Santa Barbara, California 93106-9530, USA

  • *Electronic address: maierta@ornl.gov
  • Electronic address: jarrell@physics.uc.edu
  • Electronic address: djs@vulcan2.physics.ucsb.edu

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Issue

Vol. 96, Iss. 4 — 3 February 2006

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