Collective vibrations in a three-band superconductor

descriptionPublicationkeyboard_double_arrow_right Article 01 Apr 1993 English Publisher:Springer Science and Business Media LLCJournal:Theoretical and Mathematical Physics, volume 95, pages 432-438 (issn: 0040-5779, eissn: 1573-9333,

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Authors: Palistrant, V. A.;

doi: 10.1007/bf01015898

Collective vibrations in a three-band superconductor

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Abstract

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.

Keywords

Fermi surface, three overlapping energy bands, Statistical mechanics of superconductors, acoustic branch, branches of exciton type

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