The influence of the overlapping of energy bands on the superconductivity of the localized Bose-condensated pairs at~$T=0$
Teoretičeskaâ i matematičeskaâ fizika, Tome 105 (1995) no. 3, pp. 491-502

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A system of equations for the order parameters $\Delta _{nm}$ and the chemical potential $\mu $ of the two-band superconductors with a low carrier density at $T=0$ is obtained. The limit case $\mu _n0$ corresponding to the Bose-condensation of the localized pairs in the both bands is considered. The all possible interband and intraband electron-electron interactions are taking into account. Provided $\Delta _{nm}^2/\mu _{n,m}\ll 1$ the system of equations mentioned above is lead to the system of the linear equations. The analitical solutions of these equations are obtained. The dependence of the quantities $\Delta _{nm}$ and $\mu$ on the electron-electron interaction and the carrier density is analysed.
@article{TMF_1995_105_3_a14,
     author = {M. E. Palistrant},
     title = {The influence of the overlapping of energy bands on the superconductivity of the localized {Bose-condensated} pairs at~$T=0$},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {491--502},
     publisher = {mathdoc},
     volume = {105},
     number = {3},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1995_105_3_a14/}
}
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M. E. Palistrant. The influence of the overlapping of energy bands on the superconductivity of the localized Bose-condensated pairs at~$T=0$. Teoretičeskaâ i matematičeskaâ fizika, Tome 105 (1995) no. 3, pp. 491-502. http://geodesic.mathdoc.fr/item/TMF_1995_105_3_a14/