Superconducting phase diagram of the paramagnetic one-band Hubbard model

Abstract

We study spin-fluctuation-mediated superconductivity in the one-band Hubbard model. Higher order effective interactions in $U$ give rise to a superconducting instability which is very sensitive to changes in the Fermi surface topology arising as a function of doping and changes in the band structure. We show the superconducting phase diagram as a function of doping and next-nearest neighbor hopping in the limit of very small Coulomb interaction strength and discuss peculiarities arising at the phase boundaries separating different superconducting domains.

6 pages, 4 figures

References in corpus (4)

• Superconductivity in the repulsive Hubbard model: an asymptotically exact weak-coupling solution
• Emergent BCS regime of the two-dimensional fermionic Hubbard model: ground-state phase diagram
• Pairing symmetry of the one-band Hubbard model in the paramagnetic weak-coupling limit: a numerical RPA study
• Conditions for magnetically induced singlet d-wave superconductivity on the square lattice

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• Interplay of magnetism and superconductivity in 2D extended Hubbard model
• Phase diagrams of singlet superconducting states with mixed symmetry
• Time-reversal symmetry breaking from lattice dislocations in superconductors
• Lattice, Charge and Spin phase inhomogeneity in complex striped quantum matter