Multi-fluxon dynamics in inhomogeneous Josephson junctions: experiment

Author

Ustinov, A.V.

Author_Institution

Inst. of Solid State Phys., Acad. of Sci., Moscow, USSR

Volume

25

Issue

2

fYear

1989

fDate

3/1/1989 12:00:00 AM

Firstpage

1440

Lastpage

1443

Abstract

Long Nb-NbO-Pb Josephson junctions with artificially formed SiO inhomogeneities in the insulator layer have been studied. A fine structure has been observed on the current-voltage characteristics of the junctions. Such structure is considered to be due to the resonant interaction between the fluxon and its radiation. The single-fluxon effect in the zero magnetic field and the multifluxon effect in a large field have been studied experimentally. The results are compared with those of the perturbation theory and numerical simulation. A multifluxon-chain pinning effect observed in the commensurable lattice of inhomogeneities is reported and discussed

Keywords

Josephson effect; flux pinning; lead; niobium; niobium compounds; superconducting junction devices; type I superconductors; type II superconductors; Nb-NbO-Pb; SiO inhomogeneities; current-voltage characteristics; inhomogeneous Josephson junctions; insulator layer; large magnetic field; long junctions; multifluxon-chain pinning effect; resonant interaction; single-fluxon effect; zero magnetic field; Frequency; Insulation; Josephson junctions; Lattices; Magnetic field measurement; Magnetic fields; Magnetic resonance; Niobium; Physics; Solid state circuits;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.92567

Filename

92567