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Local Josephson vortex generation and manipulation with a Magnetic Force Microscope.

ABSTRACT: Josephson vortices play an essential role in superconducting quantum electronics devices. Often seen as purely conceptual topological objects, 2?-phase singularities, their observation and manipulation are challenging. Here we show that in Superconductor-Normal metal-Superconductor lateral junctions Josephson vortices have a peculiar magnetic fingerprint that we reveal in Magnetic Force Microscopy (MFM) experiments. Based on this discovery, we demonstrate the possibility of the Josephson vortex generation and manipulation by the magnetic tip of a MFM, thus paving a way for the remote inspection and control of individual nano-components of superconducting quantum circuits.

SUBMITTER: Dremov VV 

PROVIDER: S-EPMC6728352 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature

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Josephson vortices play an essential role in superconducting quantum electronics devices. Often seen as purely conceptual topological objects, 2π-phase singularities, their observation and manipulation are challenging. Here we show that in Superconductor-Normal metal-Superconductor lateral junctions Josephson vortices have a peculiar magnetic fingerprint that we reveal in Magnetic Force Microscopy (MFM) experiments. Based on this discovery, we demonstrate the possibility of the Josephson vortex  ...[more]

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