The Isotope Effect of Disordered Superconductors
M. Mierzyńska and K.I. Wysokiński
Institute of Physics, M. Curie-Skłodowska University, pl. M. Curie-Skłodowskiej 1, 20-031 Lublin, Poland
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The isotope effects in disordered weak and strong coupling superconductors of different symmetries of the order parameter have been studied. We have found that even though weak localisation corrections to Eliashberg equations describe a strong degradation of transition temperature with disorder of s-wave superconductors, their influence on isotope coefficient is relatively weak. On the other hand the calculated change of relative isotope coefficient with Tc/Tc0 in homogeneous thin film materials is similar to that observed in high temperature superconductors.
DOI: 10.12693/APhysPolA.106.647
PACS numbers: 74.25.Bt, 74.62.-c, 74.62.Dh