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Escape of a Josephson vortex trapped in an annular Josephson junction

Fistul, M.V.; Castellano, M.G.; Cirillo, M.; Torrioli, G.; Wallraff, A.; Ustinov, A.V.

Abstract Experiments on the thermal escape of a Josephson vortex trapped in a magnetic field–induced potential are reported. The measured critical current statistics in a wide range of applied magnetic field H shows that the vortex escape temperature Te≃T at large magnetic fields and Te⪢T for small values of H. We have developed a theory of vortex escape which explains the increase of Te by the presence of a small residual pinning in the junction. A peculiar regime when vortex changes its shape in the process of escape is also analyzed.

Zugehörige Institution(en) am KIT Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Jahr 2000
Sprache Englisch
Identifikator ISSN: 0921-4526, 1873-2135
KITopen ID: 1000074385
Erschienen in Physica / B
Band 284
Heft Part 1
Seiten 585-586
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