Josephson soliton oscillators in a superconducting thin film resonator

J. Holm, Jesper Mygind, Niels Falsig Pedersen, Paola Barbara, G. Filatrella, A. Davidson

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Abstract

Josephson soliton oscillators integrated in a resonator consisting of two closely spaced coplanar superconducting microstrips have been investigated experimentally. Pairs of long 1-D Josephson junctions with a current density of about 1000 A/cm2 were made using the Nb-AlOx-Nb trilayer technique. Different modes of half-wave resonances in the thin-film structure impose different magnetic field configurations at the boundaries of the junctions. The DC I-V characteristic shows zero-field steps with a number of resonator-induced steps. These structures are compared to RF-induced steps generated by phase-locking of the soliton motion to an external microwave source. The two different resonant configurations identified may be interpreted as a coupling to the microwave field at the end boundary and as a more homogeneous coupling distributed over the junction length
Original languageEnglish
JournalI E E E Transactions on Applied Superconductivity
Volume3
Issue number1(4)
Pages (from-to)2504-2507
ISSN1051-8223
DOIs
Publication statusPublished - 1993

Bibliographical note

Copyright: 1993 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

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