Electron-Phonon Interactions in HTSC Cuprates
Phonons have been generally considered to be irrelevant to the high-temperature superconductivity in the cuprates. However, such a bias is usually based upon the assumption of conventional electron-phonon coupling, while in the cuprates the coupling can be rather unconventional because of strong electron correlation. We present the results of our recent measurements of phonon dispersion in YBa2Cu3O6+x by inelastic neutron scattering. These suggest certain phonon modes interact strongly with electrons and are closely involved in the superconductivity phenomenon with possible contribution to pairing.
T. Egami and J. Chung and R. J. McQueeney and M. Yethiraj and H. A. Mook and C. D. Frost and Y. N. Petrov and F. Dogan and Y. Inamura and M. Arai and S. Tajima and Y. Endoh, "Electron-Phonon Interactions in HTSC Cuprates," Physica B: Condensed Matter, vol. 316-317, pp. 62-68, Elsevier, May 2002.
The definitive version is available at http://dx.doi.org/10.1016/S0921-4526(02)00426-X
Materials Science and Engineering
Keywords and Phrases
Electrons; High temperature effects; Neutron scattering; Phonons; Superconductivity; Transport properties; High-temperature superconductivity (HTSC); Oxide superconductors
International Standard Serial Number (ISSN)
Article - Journal
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