Two-band superconductivity theory beyond the Migdal theorem
نویسندگان
چکیده
منابع مشابه
FAILURE OF THE MIGDAL-ELIASHBERG THEORY OF SUPERCONDUCTIVITY IN Rb3C60
We discuss the compatibility of the most accurate experimental data with the ordinary Migdal-Eliashberg theory of superconductivity in the fullerene compound Rb3C60. By using different model phonon spectra we conclude that the experimental data can be fitted only by invoking an electron-phonon coupling of order λ ≃ 3. This exceedingly high value is unphysical and it is not consistent with the b...
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ژورنال
عنوان ژورنال: Theoretical and Mathematical Physics
سال: 2006
ISSN: 0040-5779,1573-9333
DOI: 10.1007/s11232-006-0155-9