@inproceedings{804c5f61114f427b92ba6f8de7e536fa,
title = "Superconductivity from a long-range repulsive interaction",
abstract = "The lattice model with short-range interactions (exemplified by the Hubbard model) is known to exhibit quite different features from those in the electron gas with the long-range Coulomb interaction. In order to explore how they cross over to each other, we have studied an extended Hubbard model which includes repulsions up to the 12th neighbors with the simplified fluctuation exchange (FLEX) approximation for the square lattice. We have found that (i) in the most dilute density region, spin and charge fluctuations become comparable, and s- and p-waves superconductivity become dominant, in agreement with the result for the electron gas by Takada, while (ii) the dominant spin fluctuation and its reflection on dx2-y2 and dxy pairing, both the effect of lattice structure, persists well away (n ≳ 0.2) from the half filling.",
keywords = "Charge fluctuation, Electron gas, Hubbard model, Spin fluctuation, Superconductivity",
author = "S. Onari and R. Arita and K. Kuroki and H. Aoki",
year = "2006",
month = dec,
day = "1",
doi = "10.1063/1.2354833",
language = "English",
isbn = "0735403473",
series = "AIP Conference Proceedings",
pages = "559--560",
booktitle = "LOW TEMPERATURE PHYSICS",
note = "LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 ; Conference date: 10-08-2006 Through 17-10-2006",
}