Regensburg 2019 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 49: Poster Session: Superconductivity

TT 49.41: Poster

Mittwoch, 3. April 2019, 15:00–18:30, Poster D

Josephson vortices in a high kinetic inductive environment — •Lukas Powalla¹, Micha Wildermuth¹, Jan Nicolas Voss¹, Yannick Schön¹, Hannes Rotzinger¹, and Alexey V. Ustinov^1,2 — ¹Physikalisches Institut, Karlsruher Institut für Technologie, Karlsruhe, Germany — ²Russian Quantum Center, National University of Science and Technology MISIS, Moscow, Russia

The dynamics of Josephson vortices in long Josephson junctions is a well-known example of solitons in physics and allows to study highly nonlinear effects on a mesoscopic scale. A possible path to approach a quantum limit of soliton propagation is to study the Josephson vortices in an environment with high kinetic inductance. We experimentally study long Josephson junctions with electrodes having a large fraction of high kinetic inductance. The kinetic inductance of the electrodes is expected to strongly reduce the Josephson penetration depth and leads to nonlocal electrodynamics of vortices in the junction.
We will present transport measurements of long Josephson junctions with electrodes made from disordered oxidized aluminium and evaluate the influence of high kinetic inductance on the vortex properties.