COLLECTIVE NODES WITH A SOUND SPECTRUM IN LAYERED SUPERCONDUCTORS

Authors
VARDANIAN RA
Citation
Ra. Vardanian, COLLECTIVE NODES WITH A SOUND SPECTRUM IN LAYERED SUPERCONDUCTORS, Physica. C, Superconductivity, 235, 1994, pp. 2141-2142
Citations number
3
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
235
Year of publication
1994
Part
3
Pages
2141 - 2142
Database
ISI
SICI code
0921-4534(1994)235:<2141:CNWASS>2.0.ZU;2-E
Abstract
We calculate the collective-modes spectrum for a layered superconducto r. We describe the conduction electrons by a Hamiltonian which treats the electrons within a metallic layer in the effective-mass approximat ion and couples neighboring layers by a Josephson-type term. Values of velocity of collective modes for two principal directions of the wave vector, along and across superlattice axis, are found.