Charge-fluctuation mediated dxy pairing for high-Tc superconductivity

T. Tsuji, O. Narikiyo, K. Miyake

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)333-340
Number of pages8
JournalPhysica C: Superconductivity and its applications
Volume226
Issue number3-4
DOIs
Publication statusPublished - Jun 10 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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