Electron-phonon interaction and electron correlation in high temperature superconductors

Sumio Ishihara, Naoto Nagaosa

Research output: Contribution to journalConference articlepeer-review

Abstract

Roles of electron-phonon interaction in the strongly correlated cuprates have been investigated theoretically. We have found that the oxygen displacement contributes to the d-wave paring in the region along the (0,0)-(q x,0) and (0,0)-(0,qy), where the strong coupling to the electrons is observed experimentally. Being based on the slave-boson picture applied to the t-J model and the Eliashberg theory, roles of electron-phonon interaction in the angle-resolved photoemission spectra (ARPES), tunneling spectra and optical conductivity are investigated. The vertex correction is essential to describe the electron-phonon interaction in the strongly correlated cuprates.

Original languageEnglish
Pages (from-to)309-310
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume408-410
Issue number1-4
DOIs
Publication statusPublished - 2004 Aug
EventProceedings of the International Conference on Materials - Rio de Janeiro, Brazil
Duration: 2003 May 252003 May 30

Keywords

  • ARPES
  • Electron correlation
  • Electron-phonon interaction
  • Phonon softening

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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