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Teoreticheskaya i Matematicheskaya Fizika, 1972, Volume 12, Number 2, Pages 264–282 (Mi tmf2992)  

This article is cited in 4 scientific papers (total in 4 papers)

Investigation of the electron-state densities in two-band super conductors with a nonmagnetic impurity

N. I. Botoshan, V. A. Moskalenko, A. M. Ursu
References:
Abstract: The electron-state densities $n_n(\omega)$ and also the related functions $\bar n_n(\omega)$, $m_n(\omega)$, and $\bar m_n(\omega)$ are calculated for a two-band superconductor with a nonmagnetic impurity in the limiting cases when the impurity has a low or a high concentration. The calculations are made for all frequencies in the range $\omega\geqslant\Omega_g$, where $\Omega_g$ is the single-particle spectrum energy gap of the two-band superconductor. It is shown that at low impurity concentrations $n_1$ and $n_2$ have sharp peaks near the corresponding energy gaps $\gamma_1$ and $\gamma_2$ of the pure two-band superconductor. Far from these values $\omega=\gamma_n$ a small impurity concentration hardly modifies the expressions for the densities given by the BCS-Bogolyubov theory for a pure two-band superconductor. If the nonmagnetic impurity has a high concentration, the functions $n_n$, $\bar n_n$, etc., of both bands differ little, and the state densities $n_n$ have a common maximum at the frequency $\Omega_m=\frac{\Gamma_1N_1+\Gamma_2N_2}{N_1+N_2}$. The energy gap $\Omega_g$ in this limiting case is somewhat less than $\Omega_m$. The densities $n_m(\omega)$ obtained in the different frequency ranges are fitted at the boundaries of these ranges.
Received: 06.09.1971
English version:
Theoretical and Mathematical Physics, 1972, Volume 12, Issue 2, Pages 809–822
DOI: https://doi.org/10.1007/BF01035803
Language: Russian
Citation: N. I. Botoshan, V. A. Moskalenko, A. M. Ursu, “Investigation of the electron-state densities in two-band super conductors with a nonmagnetic impurity”, TMF, 12:2 (1972), 264–282; Theoret. and Math. Phys., 12:2 (1972), 809–822
Citation in format AMSBIB
\Bibitem{BotMosUrs72}
\by N.~I.~Botoshan, V.~A.~Moskalenko, A.~M.~Ursu
\paper Investigation of the electron-state densities in two-band super conductors with a nonmagnetic impurity
\jour TMF
\yr 1972
\vol 12
\issue 2
\pages 264--282
\mathnet{http://mi.mathnet.ru/tmf2992}
\transl
\jour Theoret. and Math. Phys.
\yr 1972
\vol 12
\issue 2
\pages 809--822
\crossref{https://doi.org/10.1007/BF01035803}
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  • This publication is cited in the following 4 articles:
    Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
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