Superexchange Mediated Superconductivity in the Single Band Hubbard Model

  • S. Doniach
  • P. J. Hirschfeld
  • M. Inui
  • A. E. Ruckenstein

Abstract

We discuss the physics of BCS pairing in the strongly correlated single band Hubbard model close to half-filling. In contrast to spin-fluctuation mediated pairing of importance in 3 He and heavy Fermion systems, we argue that the superexchange mediated pairing proposed by Anderson is stabilized by short range antiferromagnetic spin ordering. A mean field calculation shows that coexistence of antiferromagnetism and superconductivity is a stable solution for a doped Mott-Hubbard system.

Keywords

Coherence Perovskite 

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Copyright information

© Plenum Press, New York 1987

Authors and Affiliations

  • S. Doniach
    • 1
  • P. J. Hirschfeld
    • 1
    • 2
  • M. Inui
    • 3
  • A. E. Ruckenstein
    • 2
  1. 1.Dept of Applied PhysicsStanford UniversityStanfordUSA
  2. 2.Dept of PhysicsUniversity of California at San DiegoLa JollaUSA
  3. 3.Dept of PhysicsStanford UniversityStanfordUSA

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