New Josephson-like effect in a superconducting transformer

The coupled motion of the vortex lattices of two electrically insulated, superimposed, superconducting thin films (primary and secondary) in a perpendicular magnetic field, is predicted to exhibit a Josephson-like behavior. For a dc applied current flowing in the primary film, the voltage difference...

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Bibliographic Details
Published in:Applied physics letters 1994-05, Vol.64 (21), p.2885-2887
Main Authors: Gilabert, A., Schuller, Ivan K., Moshchalkov, V. V., Bruynseraede, Y.
Format: Article
Language:English
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Summary:The coupled motion of the vortex lattices of two electrically insulated, superimposed, superconducting thin films (primary and secondary) in a perpendicular magnetic field, is predicted to exhibit a Josephson-like behavior. For a dc applied current flowing in the primary film, the voltage difference between the time-averaged primary and secondary flux flow voltages obeys the equations of a resistively shunted junction model. If an ac current is superimposed on the dc current, Shapiro-type steps are predicted in the current-voltage characteristic. In contrast to the conventional Josephson effect; the voltage positions of these steps can be tuned by the applied magnetic field.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.111404