Electron-phonon interaction in correlated cuprate superconductors

Sumio Ishihara; Naoto Nagaosa

doi:10.1016/j.jpcs.2005.10.053

Electron-phonon interaction in correlated cuprate superconductors

Sumio Ishihara, Naoto Nagaosa

SCI - Physics

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

Abstract

Electron-phonon interaction in the strongly correlated superconducting cuprates is studied. Two types of the electron-phonon interactions, i.e. the diagonal and off-diagonal interactions which modify the formation energy of the Zhang-Rice singlet and its transfer integral, respectively, are introduced in the t-J model. The characteristic phonon-momentum and electron-momentum dependence which are resulted from the off-diagonal coupling can explain a variety of experiments. We show that the vertex correction for the electron-phonon interaction enhances the attractive potential for the d-wave pairing.

Original language	English
Pages (from-to)	154-156
Number of pages	3
Journal	Journal of Physics and Chemistry of Solids
Volume	67
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jpcs.2005.10.053
Publication status	Published - 2006 Jan

Keywords

D. Electronic structure
D. Phonons
D. Super conductivity

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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title = "Electron-phonon interaction in correlated cuprate superconductors",

abstract = "Electron-phonon interaction in the strongly correlated superconducting cuprates is studied. Two types of the electron-phonon interactions, i.e. the diagonal and off-diagonal interactions which modify the formation energy of the Zhang-Rice singlet and its transfer integral, respectively, are introduced in the t-J model. The characteristic phonon-momentum and electron-momentum dependence which are resulted from the off-diagonal coupling can explain a variety of experiments. We show that the vertex correction for the electron-phonon interaction enhances the attractive potential for the d-wave pairing.",

keywords = "D. Electronic structure, D. Phonons, D. Super conductivity",

author = "Sumio Ishihara and Naoto Nagaosa",

note = "Funding Information: This work is supported by KAKENHI from MEXT. Part of the numerical calculation has been performed by the supercomputer facilities in IMR, Tohoku University. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",

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AU - Ishihara, Sumio

AU - Nagaosa, Naoto

N1 - Funding Information: This work is supported by KAKENHI from MEXT. Part of the numerical calculation has been performed by the supercomputer facilities in IMR, Tohoku University. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

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N2 - Electron-phonon interaction in the strongly correlated superconducting cuprates is studied. Two types of the electron-phonon interactions, i.e. the diagonal and off-diagonal interactions which modify the formation energy of the Zhang-Rice singlet and its transfer integral, respectively, are introduced in the t-J model. The characteristic phonon-momentum and electron-momentum dependence which are resulted from the off-diagonal coupling can explain a variety of experiments. We show that the vertex correction for the electron-phonon interaction enhances the attractive potential for the d-wave pairing.

AB - Electron-phonon interaction in the strongly correlated superconducting cuprates is studied. Two types of the electron-phonon interactions, i.e. the diagonal and off-diagonal interactions which modify the formation energy of the Zhang-Rice singlet and its transfer integral, respectively, are introduced in the t-J model. The characteristic phonon-momentum and electron-momentum dependence which are resulted from the off-diagonal coupling can explain a variety of experiments. We show that the vertex correction for the electron-phonon interaction enhances the attractive potential for the d-wave pairing.

KW - D. Electronic structure

KW - D. Phonons

KW - D. Super conductivity

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