Geodesic
Collective vibrations in a~three-band superconductor
Teoretičeskaâ i matematičeskaâ fizika, Tome 95 (1993) no. 1, pp. 101-110

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Collective vibrations in a superconductor with three overlapping energy bands on the Fermi surface are investigated. It is shown that for certain relationships between the parameters of the theory there can, in addition to the acoustic branch, be two different branches of exciton type, which arise because of fluctuations of the phases of the order parameters. 
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     author = {M. E. Palistrant},
     title = {Collective vibrations in a~three-band superconductor},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
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     publisher = {mathdoc},
     volume = {95},
     number = {1},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1993_95_1_a9/}
}
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M. E. Palistrant. Collective vibrations in a~three-band superconductor. Teoretičeskaâ i matematičeskaâ fizika, Tome 95 (1993) no. 1, pp. 101-110. http://geodesic.mathdoc.fr/item/TMF_1993_95_1_a9/