Spin-triplet superconductivity in repulsive Hubbard models with disconnected Fermi surfaces: a case study on triangular and honeycomb lattices

Abstract

We propose that spin-fluctuation-mediated spin-triplet superconductivity may be realized in repulsive Hubbard models with disconnected Fermi surfaces. The idea is confirmed for Hubbard models on triangular (dilute band filling) and honeycomb (near half-filling) lattices using fluctuation exchange approximation, where triplet pairing order parameter with f-wave symmetry is obtained. Possible relevance to real superconductors is suggested.

5 pages, 6 figures, RevTeX, uses epsf.sty and multicol.sty

References in corpus (3)

• Mechanism of spin-triplet superconductivity in Sr2RuO4
• Spin-fluctuation exchange study of superconductivity in two- and three-dimensional single-band Hubbard models
• d- and p-wave superconductivity mediated by spin fluctuations in two- and three-dimensional single-band repulsive Hubbard model

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