6533b838fe1ef96bd12a472b
RESEARCH PRODUCT
Flux flow effects in very long Josephson junctions
Matteo CirilloP. CikmacsRoberto RussoV. Merlosubject
Josephson effectPi Josephson junctionPhysicsSettore FIS/03Condensed matter physicsField (physics)Position (vector)Statistical and Nonlinear PhysicsFunction (mathematics)Condensed Matter PhysicsPlasma oscillationMagnetic fieldVoltagedescription
We report on measurements on very long, L ≃ 30λj, NbAlOxNb underdamped in-line junctions, on which we observed displaced linear slope (DLS) generated by the application of an external magnetic field. We study the behaviour of the branches as a function of the applied magnetic field in terms of both current amplitude and voltage position. The DLS is seen to shift rigidly towards higher voltages when increasing the field, spanning a region roughly centred around the Josephson plasma frequency. We discuss the behaviour of linear branches in terms of one dimensional flux-flow along the extended side of the junction, comparing our data with the results of numerical modeling; from these calculations the non-resonant nature of DLS is very evident, in contrast to the resonant regime giving rise to Fiske steps (FS).
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-10-30 |