2003/06/06 by Takashi Kimura, T. Kimura, Kazuhiko Kuroki +2 · 1 citation
Physics and Astronomy · #Advanced Condensed Matter Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.69.054501
arxiv created 2003/06/06 · openalex publication_date 2004/02/06 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Possibility of superconductivity from electron repulsion in the Shastry-Sutherland lattice, which has a spin gap at half filling, is explored with the repulsive Hubbard model in the fluctuation-exchange approximation. We find that, while superconductivity is not favored around the half filling, superconductivity is favored around the quarter filling. Our results suggest that the Fermi-surface nesting is more important than the spin dimerization for superconductivity.