Article

Collective oscillations of the order parameter in superconductors with local pairs

S. I. Beloborod’koPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR , Khar’kovI. O. KulikPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR , Khar’kov

Soviet Journal of Low Temperature Physicsjournal1986en

ABI

Abstract

Collective oscillations of the order parameter in superconductors with local singlet pairing are studied. It is shown that for an uncharged superfluid liquid there exist oscillations with an acoustic spectrum, analogous to the Anderson–Bogolyubov oscillations in the BCS theory. Taking into account the long-range part of the Coulomb interaction gives a plasma threshold in the spectrum of oscillations. If, however, there exists, in addition to a narrow band, whose electrons form local pairs, a wide conduction band, then the spectrum once again becomes gapless.

Topics

Rare-earth and actinide compounds Physics of Superconductivity and Magnetism Iron-based superconductors research

Identifiers

DOI: 10.1063/10.0031492

Citations and references

Cited by 06 references

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