Collective excitations in superconductors

descriptionPublicationkeyboard_double_arrow_right Article 01 Jun 1974 English Publisher:Springer Science and Business Media LLCJournal:Zeitschrift für Physik, volume 268, pages 123-127 (issn: 1434-6001, eissn: 1434-601X,

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Authors: Gerhart Lüders; Klaus Brandt;

doi: 10.1007/bf01669868

Collective excitations in superconductors

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Abstract

The excitations connected with quantum condensation of a fermion gas are calculated quantitatively along the lines of a previous paper. We find exact agreement with earlier results: excitations of the phonon type in the absence of Coulomb interaction, strong indications for their nonexistence in the presence of this interaction.

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University of Göttingen
Germany

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