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

Dremov Viacheslav V VV Grebenchuk Sergey Yu SY Shishkin Andrey G AG Baranov Denis S DS Hovhannisyan Razmik A RA Skryabina Olga V OV Lebedev Nickolay N Golovchanskiy Igor A IA Chichkov Vladimir I VI Brun Christophe C Cren Tristan T Krasnov Vladimir M VM Golubov Alexander A AA Roditchev Dimitri D Stolyarov Vasily S VS

Nature communications 20190905 1

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]

PMID: 31488813

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