Charge-fluctuation mediated dxy pairing for high-Tc superconductivity

T. Tsuji, O. Narikiyo, K. Miyake

研究成果: ジャーナルへの寄稿学術誌査読

10 被引用数 (Scopus)

抄録

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.

本文言語英語
ページ(範囲)333-340
ページ数8
ジャーナルPhysica C: Superconductivity and its applications
226
3-4
DOI
出版ステータス出版済み - 6月 10 1994
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

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