Spin-fluctuation exchange study of superconductivity in two- and three-dimensional single-band Hubbard models

1999/09/30 by Ryotaro Arita, Kazuhiko Kuroki, Hideo Aoki · 2 citations
Physics and Astronomy · #Condensed matter physics #Hubbard model #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum, superfluid, helium dynamics #Spin (aerodynamics) #Superconductivity #cond-mat

paper · pdf · doi:10.1103/physrevb.60.14585

RevTex, 5 figures in Postscript, to be published in Phys. Rev. B

arxiv created 1999/10/01 · openalex publication_date 1999/12/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

In order to identify the most favorable situation for superconductivity in the repulsive single-band Hubbard model, we have studied instabilities for d-wave pairing mediated by antiferromagnetic spin fluctuations and p-wave pairing mediated by ferromagnetic fluctuations with the fluctuation exchange approximation in both two dimensions and three dimensions. By systematically varying the band filling and band structure we have shown that (i) d pairing is stronger in two dimensions than in three dimensions and (ii) p pairing is much weaker than d pairing.

Citations

• Possible highT c superconductivity in the Ba?La?Cu?O system
• A Consistent Description of the Pairing Symmetry in Hole and Electron Doped Cuprates Within the Two-Dimensional Hubbard Model
• Phenomenological theory of unconventional superconductivity

Cited by

• Spin-triplet superconductivity in repulsive Hubbard models with disconnected Fermi surfaces: A case study on triangular and honeycomb lattices
• Possible spin triplet superconductivity in NaxCoO2·yH2O —59Co NMR studies