Control of Superconducting Correlations in High-Tc Cuprates

Hirokazu Tsunetsugu; Masatoshi Imada

doi:10.1143/JPSJ.68.3162

Control of Superconducting Correlations in High-T_c Cuprates

Hirokazu Tsunetsugu, Masatoshi Imada

Waseda Research Institute for Science and Engineering

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

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

Original language	English
Pages (from-to)	3162-3165
Number of pages	4
Journal	journal of the physical society of japan
Volume	68
Issue number	10
DOIs	https://doi.org/10.1143/JPSJ.68.3162
Publication status	Published - 1999 Oct

Keywords

Angle-resolved photoemission
High- T superconductivity
Pairing correlations
Single-electron level

ASJC Scopus subject areas

Physics and Astronomy(all)

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

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