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The isotope mass effect in generalized BCS-like model of superconductor with singularities in energy spectrum is considered. The calculations are performed for logarithmic and square-root van Hove singularities corresponding to quasi-2D and quasi-1D systems. The effects of finite life-times of electronic states are taken into account by shifting the singularities off the rreal axis in the complex energy plane.
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Tom
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149--153
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Bibliogr. 6 poz.,
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- Center for Physics and Applied Mathematics, Institute of Fundamental Technological Research, 00-049 Warsaw, Poland
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Bibliografia
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bwmeta1.element.baztech-article-BAT2-0001-1192