Coulomb correlated electronic band structure of cuprate superconductors

Jaejun Yu; A. J. Freeman

doi:10.1016/0921-4534(91)90380-H

Coulomb correlated electronic band structure of cuprate superconductors

Jaejun Yu^*, A. J. Freeman

^*Corresponding author for this work

Physics and Astronomy

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

7 Scopus citations

Abstract

The effect of Coulomb correlations on the electronic structure of Cu-oxide superconductors are determined with the many-body corrections to the known band structure made by calculating perturbatively the self-energy due to the on-site Coulomb interaction at the Cu sites. The effective mass enhancement at E_F, renormalized band dispersions, and the energy dependence of the band state broadening for Nd_2-xCe_xCuO₄ are predicted and found to be in agreement with observations in other Cu-oxide superconductors with a choice of the effective Coulomb interaction parameter U=3 eV.

Original language	English (US)
Pages (from-to)	274-284
Number of pages	11
Journal	Physica C: Superconductivity and its applications
Volume	173
Issue number	3-4
DOIs	https://doi.org/10.1016/0921-4534(91)90380-H
State	Published - Feb 1 1991

ASJC Scopus subject areas

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

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title = "Coulomb correlated electronic band structure of cuprate superconductors",

abstract = "The effect of Coulomb correlations on the electronic structure of Cu-oxide superconductors are determined with the many-body corrections to the known band structure made by calculating perturbatively the self-energy due to the on-site Coulomb interaction at the Cu sites. The effective mass enhancement at EF, renormalized band dispersions, and the energy dependence of the band state broadening for Nd2-xCexCuO4 are predicted and found to be in agreement with observations in other Cu-oxide superconductors with a choice of the effective Coulomb interaction parameter U=3 eV.",

author = "Jaejun Yu and Freeman, {A. J.}",

note = "Funding Information: We thank D.D. Koelling and M. Norman for helpful discussions and J.C. Campuzano for making his results available prior to publication. We are also grateful to S.-J. Oh for discussions and D.W. Lynch, A. Virosztek and J. Ruvalds for preprints of their work. Work supported by the National Science Foundation (DMR88-16 126) through the North-western University Materials Research Center and a computing grant from its Division of Advanced Scientific Computing at the National Center for Supercomputer Applications at the University of Illinois, Urbana/Champaign and by a computing grant at the NASA Ames Supercomputing Center.",

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AU - Yu, Jaejun

AU - Freeman, A. J.

N1 - Funding Information: We thank D.D. Koelling and M. Norman for helpful discussions and J.C. Campuzano for making his results available prior to publication. We are also grateful to S.-J. Oh for discussions and D.W. Lynch, A. Virosztek and J. Ruvalds for preprints of their work. Work supported by the National Science Foundation (DMR88-16 126) through the North-western University Materials Research Center and a computing grant from its Division of Advanced Scientific Computing at the National Center for Supercomputer Applications at the University of Illinois, Urbana/Champaign and by a computing grant at the NASA Ames Supercomputing Center.

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Y1 - 1991/2/1

N2 - The effect of Coulomb correlations on the electronic structure of Cu-oxide superconductors are determined with the many-body corrections to the known band structure made by calculating perturbatively the self-energy due to the on-site Coulomb interaction at the Cu sites. The effective mass enhancement at EF, renormalized band dispersions, and the energy dependence of the band state broadening for Nd2-xCexCuO4 are predicted and found to be in agreement with observations in other Cu-oxide superconductors with a choice of the effective Coulomb interaction parameter U=3 eV.

AB - The effect of Coulomb correlations on the electronic structure of Cu-oxide superconductors are determined with the many-body corrections to the known band structure made by calculating perturbatively the self-energy due to the on-site Coulomb interaction at the Cu sites. The effective mass enhancement at EF, renormalized band dispersions, and the energy dependence of the band state broadening for Nd2-xCexCuO4 are predicted and found to be in agreement with observations in other Cu-oxide superconductors with a choice of the effective Coulomb interaction parameter U=3 eV.

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Coulomb correlated electronic band structure of cuprate superconductors

Abstract

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