Withcuprate superconductors in mind, we study the effects of intersite repulsion V and diagonal transfer on antiferromagnetism (AF) and superconductivity (SC) inthe Hubbard model on a squarelattice, using a variational Monte Carlo method. In the trial wave function, essential factors for Mott physics and band renormalization are included. It is foundthat the effect of small V generally suppresses SC, but makesthe range of doping rate unstable toward phase separation narrower.The effect of also extends thearea stable against charge inhomogeneity, and, in particular,removesthe area of a coexistent state of SC and AF.
|出版ステータス||Published - 2015|
|イベント||27th International Symposium on Superconductivity, ISS 2014 - Tokyo, Japan|
継続期間: 2014 11 25 → 2014 11 27
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