Possibility of superconductivity in the repulsive Hubbard model on the Shastry-Sutherland lattice
Takashi Kimura, Kazuhiko Kuroki, Ryotaro Arita, Hideo Aoki
DOI 10.1103/PhysRevB.69.054501 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
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.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| SrCu2(BO3)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Superconductivity in the single-band hubbard model: mean-field treatment of slave-boson pairing
similarity 0.91T. Kopp et al.
Source status unknown — claims are unverified
Superconductivity and antiferromagnetism in the two-dimensional Hubbard model: A variational study
similarity 0.91D. Eichenberger & D. Baeriswyl
Source status unknown — claims are unverified
Possibility of superconductivity in the repulsive Hubbard model on the Shastry-Sutherland lattice
similarity 0.91Takashi Kimura et al. · 2003 · arXiv:cond-mat/0306163
Source status unknown — claims are unverified
Enhanced superconductivity by near-neighbor attraction in the doped extended Hubbard model
similarity 0.91Cheng Peng et al.
Source status unknown — claims are unverified
Superconductivity and antiferromagnetism for an extended Hubbard Hamiltonian: Role of correlated hopping in a single-band model
similarity 0.91G. A. Lara & G. G. Cabrera
Source status unknown — claims are unverified
Fidelity study of superconductivity in extended Hubbard models
similarity 0.90N. Plonka et al.
Source status unknown — claims are unverified