TY - JOUR
T1 - Charge-fluctuation mediated dxy pairing for high-Tc superconductivity
AU - Tsuji, T.
AU - Narikiyo, O.
AU - Miyake, K.
N1 - Funding Information:
This work is supporteidn partb yt heG rant-in-Aid for GeneralS cientificR esearch( 04640369)t,h e Grant-in-Aidf or ScientificR esearcho n Priority Areas: "Science of High-To superconductivity" (0424010)3 a ndt heM onbushoIn ternationSacl ien-tific ResearcPhr ogramJ:o int Research"T heoretical Studieso n StronglyC orrelatedE lectronS ystems" (03044037f)r omt heM inistryo f EducationS,c ience andC ulture.
PY - 1994/6/10
Y1 - 1994/6/10
N2 - The effective interaction for the spin-singlet Cooper pairs is calculated using the two-dimensional d-p model for high-Tc cuprates on the basis of a renormalized perturbation of the Fermi liquid: first forming the quasiparticles variationally by the Gutzwiller approximation, then treating the residual interactions among quasiparticles by the RPA. In the charge-fluctuation region, where the p hole is moderately doped and the repulsive interaction (Upd) between the nearest-neighbor p and d sites is the dominant parameter, the interaction for dxy pairs is attractive, while it is repulsive both for extended-s and dx2-y2 pairs. The on-site repulsive interaction for p electrons (Up) is compatible with this tendency, whereas the one for d electrons (Ũd) is incompatible.
AB - The effective interaction for the spin-singlet Cooper pairs is calculated using the two-dimensional d-p model for high-Tc cuprates on the basis of a renormalized perturbation of the Fermi liquid: first forming the quasiparticles variationally by the Gutzwiller approximation, then treating the residual interactions among quasiparticles by the RPA. In the charge-fluctuation region, where the p hole is moderately doped and the repulsive interaction (Upd) between the nearest-neighbor p and d sites is the dominant parameter, the interaction for dxy pairs is attractive, while it is repulsive both for extended-s and dx2-y2 pairs. The on-site repulsive interaction for p electrons (Up) is compatible with this tendency, whereas the one for d electrons (Ũd) is incompatible.
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U2 - 10.1016/0921-4534(94)90213-5
DO - 10.1016/0921-4534(94)90213-5
M3 - Article
AN - SCOPUS:0028448345
SN - 0921-4534
VL - 226
SP - 333
EP - 340
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - 3-4
ER -