Josephson plasma and vortex modes in layered superconductors

E. B. Sonin

doi:10.1103/PhysRevB.63.054527

← Back to search

Josephson plasma and vortex modes in layered superconductors

E. B. Sonin

DOI 10.1103/PhysRevB.63.054527 · Physical Review B

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

The Josephson plasma and vortex modes in layered superconductors have been studied theoretically for low magnetic fields parallel and perpendicular to layers. The two modes belong to the same lowest-frequency branch of collective-mode spectrum localized near vortices. This is the Josephson plasma resonance if pancakes are strongly pinned and cannot move. Otherwise the lowest-frequency mode is a vortex mode governed by pancake pinning and the vortex mass. The latter is strongly enhanced by wandering of a vortex line around its average direction. The recently observed jump of the magnetoabsorption-resonance frequency at the vortex phase transition line is interpreted as a transition from the Josephson plasma to the vortex mode.