Geodesic
Coexistence of dielectric and superconductive ordering in two-band systems
Teoretičeskaâ i matematičeskaâ fizika, Tome 39 (1979) no. 1, pp. 118-129

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A study is made of the coexistence of dielectric and superconducting phases in two-band systems when one of the bands is fiat. Allowance is made for the departure from half filling of a one-dimensional band, $\mu\ne0$ ($\mu$ is the chemical potential), and also jump processes. It is found that a superconducting state can be generated on the background of a dielectric state in the two-band system. However, the formation of a dielectric state on the background of superconductive ordering is impossible at all values of $\mu$, i.e., superconductivity prevents the dielectric transition. 
@article{TMF_1979_39_1_a11,
     author = {M. E. Palistrant},
     title = {Coexistence of dielectric and superconductive ordering in two-band systems},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {118--129},
     publisher = {mathdoc},
     volume = {39},
     number = {1},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1979_39_1_a11/}
}
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M. E. Palistrant. Coexistence of dielectric and superconductive ordering in two-band systems. Teoretičeskaâ i matematičeskaâ fizika, Tome 39 (1979) no. 1, pp. 118-129. http://geodesic.mathdoc.fr/item/TMF_1979_39_1_a11/