Experimental study of the interaction of fluxons with an Abrikosov vortex in a long Josephson junction

Journal Article · Fri Jan 01 04:00:00 EST 1993 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.47.944· OSTI ID:7118739

Ustinov, A V; Doderer, T; Mayer, B; Huebener, R P ^[1]; Golubov, A A ^[2]; Oboznov, V A ^[3]

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1. Lehrstuhl Experimentalphysik II, University of Tuebingen, D-7400 Tuebingen (Germany)
2. Institute for Theoretical Physics, Technische Hochschule Aachen, D-5100 Aachen (Germany)
3. Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow district, 142432 (Russian Federation)

We have used low-temperature scanning electron microscopy for the investigation of the interaction of fluxons (Josephson vortices) with a superconducting (Abrikosov) vortex trapped in one of the electrodes of a long quasi-one-dimensional Josephson junction. The Abrikosov vortex penetrated a top superconducting film and spread out in the tunnel barrier area between the films. In addition, we were able to move the Abrikosov vortex across the junction by the electron beam and to measure at the same time the value of the critical current of the junction. A model explaining a critical-current dependence on the external magnetic field and on the Abrikosov vortex position is proposed. We have also observed the bound states of a fluxon trapped by the Abrikosov vortex in the Josephson junction.

• OSTI ID: 7118739
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 47:2; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

665411* -- Basic Superconductivity Studies-- (1992-)
665412 -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABRIKOSOV THEORY
CRITICAL CURRENT
CURRENTS
ELECTRIC CURRENTS
ELECTRON MICROSCOPY
ELEMENTS
EQUATIONS
FIELD EQUATIONS
JOSEPHSON JUNCTIONS
JUNCTIONS
LEAD
MAGNETIC FLUX
METALS
MICROSCOPY
NIOBIUM
SCANNING ELECTRON MICROSCOPY
SINE-GORDON EQUATION
SUPERCONDUCTING JUNCTIONS
TRANSITION ELEMENTS
TUNNEL EFFECT