Control of Superconducting Correlations in High-Tc Cuprates

Details Control of Superconducting Correlations in High-Tc Cuprates Control of Superconducting Correlations in High-Tc Cuprates

1999-08-04

arxiv.org/abs/cond-mat/9908058v1

Physics

Condensed Matter

Superconductivity

4 pages, 6 eps figures

Scientific paper

10.1143/JPSJ.68.3162

A strategy to enhance d-wave superconducting correlations is proposed based on our numerical study for correlated electron models for high-Tc cuprates. We observe that the pairing is enhanced when the single-electron level around (pi,0) is close to the Fermi level E_F, while the d-wave pairing interaction itself contains elements to disfavor the pairing due to shift of the (pi,0)-level. Angle-resolved photoemission results in the cuprates are consistently explained in the presence of the d-wave pairing interaction. Our proposal is the tuning of the (pi,0)-level under the many-body effects to E_F by optimal design of band structure.

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