Role of the electron-phonon interaction in the strongly correlated cuprate superconductors

Z. X. Shen, A. Lanzara, S. Ishihara, N. Nagaosa

Research output: Contribution to journalArticlepeer-review

110 Citations (Scopus)

Abstract

Using high-resolution angle-resolved photoemission data in conjunction with that from neutron and other probes, we show that electron-phonon coupling is strong in cuprate superconductors and that it plays an important role in pairing. In addition to the strong electron correlation, the inclusion of phonons provides a theoretical framework explaining many important phenomena that cannot be understood by a strongly correlated electronic model alone. In particular, it is indispensable to explain the difference among materials. The phonons with the wavenumber around the (0, qy) and (qx, 0) axes create d-wave pairing while that near (π, π) are pair breaking. Therefore the half-breathing mode of the oxygen motions helps d-wave superconductivity.

Original languageEnglish
Pages (from-to)1349-1368
Number of pages20
JournalPhilosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
Volume82
Issue number13
DOIs
Publication statusPublished - 2002 Sep
Externally publishedYes

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physics and Astronomy(all)

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