Influence of local symmetry on the electron-phonon coupling in perovskites

I. I. Mazin, Sergey Rashkeev

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Abstract

The Hopfield factor (electronic part of the electron-phonon coupling constant) is calculated in the Rigid-Muffin-Tin approximation (RMTA) for several perovskite high-Tc superconductors. Calculations were performed in the conventional "spherical" approximation, as well as taking into account proper local symmetry. It is shown that the layered perovskite crystal symmetry generally favors strong electron-phonon interaction on copper site. We also estimate some for non-RMTA effects.

Original languageEnglish
Pages (from-to)1347-1348
Number of pages2
JournalPhysica C: Superconductivity and its Applications
Volume162-164
Issue numberPART 2
Publication statusPublished - 1 Dec 1989
Externally publishedYes

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ASJC Scopus subject areas

  • Condensed Matter Physics

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