Observation of Interacting Josephson vortex chains by magnetic force microscopy

Sergey Yu. Grebenchuk; R. A. Hovhannisyan; Viacheslav V. Dremov; Andrey G. Shishkin; Vladimir I. Chichkov; A.A. Golubov; Dimitri Roditchev; Vladimir M. Krasnov; Vasily S. Stolyarov

doi:DOI: 10.1103/PhysRevResearch.2.023105

Observation of Interacting Josephson vortex chains by magnetic force microscopy

Sergey Yu. Grebenchuk, R. A. Hovhannisyan, Viacheslav V. Dremov, Andrey G. Shishkin, Vladimir I. Chichkov, A.A. Golubov, Dimitri Roditchev, Vladimir M. Krasnov^*, Vasily S. Stolyarov^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

The ability to control Josephson vortices is instrumental for development of superconducting cryoelectronics. However, direct visualization of multivortex states in Josephson junctions is a challenging task. Here, we employ a magnetic force microscopy (MFM) for the analysis of planar Josephson junctions. We observe a specific MFM response, seen as a chain of small rings. By changing the applied field, we show that the number of rings is equal to the number of flux quanta in the junction. Therefore, each ring represents an individual vortex in a one-dimensional vortex chain within the junction. Our observation demonstrates that the MFM technique can be used for visualization of Josephson vortices and for probing their spatial configurations and mutual interaction.

Original language	English
Article number	023105
Pages (from-to)	1
Number of pages	6
Journal	Physical Review Research
Volume	2
Issue number	2
DOIs	https://doi.org/DOI: 10.1103/PhysRevResearch.2.023105
Publication status	Published - 29 Apr 2020

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DOI: 10.1103/PhysRevResearch.2.023105Licence: CC BY

Grebenchuk-2020-Observation-of-interacting-josephsoFinal published version, 1.42 MBLicence: CC BY

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title = "Observation of Interacting Josephson vortex chains by magnetic force microscopy",

abstract = "The ability to control Josephson vortices is instrumental for development of superconducting cryoelectronics. However, direct visualization of multivortex states in Josephson junctions is a challenging task. Here, we employ a magnetic force microscopy (MFM) for the analysis of planar Josephson junctions. We observe a specific MFM response, seen as a chain of small rings. By changing the applied field, we show that the number of rings is equal to the number of flux quanta in the junction. Therefore, each ring represents an individual vortex in a one-dimensional vortex chain within the junction. Our observation demonstrates that the MFM technique can be used for visualization of Josephson vortices and for probing their spatial configurations and mutual interaction.",

author = "Grebenchuk, {Sergey Yu.} and Hovhannisyan, {R. A.} and Dremov, {Viacheslav V.} and Shishkin, {Andrey G.} and Chichkov, {Vladimir I.} and A.A. Golubov and Dimitri Roditchev and Krasnov, {Vladimir M.} and Stolyarov, {Vasily S.}",

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doi = "DOI: 10.1103/PhysRevResearch.2.023105",

language = "English",

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T1 - Observation of Interacting Josephson vortex chains by magnetic force microscopy

AU - Grebenchuk, Sergey Yu.

AU - Hovhannisyan, R. A.

AU - Dremov, Viacheslav V.

AU - Shishkin, Andrey G.

AU - Chichkov, Vladimir I.

AU - Golubov, A.A.

AU - Roditchev, Dimitri

AU - Krasnov, Vladimir M.

AU - Stolyarov, Vasily S.

PY - 2020/4/29

Y1 - 2020/4/29

N2 - The ability to control Josephson vortices is instrumental for development of superconducting cryoelectronics. However, direct visualization of multivortex states in Josephson junctions is a challenging task. Here, we employ a magnetic force microscopy (MFM) for the analysis of planar Josephson junctions. We observe a specific MFM response, seen as a chain of small rings. By changing the applied field, we show that the number of rings is equal to the number of flux quanta in the junction. Therefore, each ring represents an individual vortex in a one-dimensional vortex chain within the junction. Our observation demonstrates that the MFM technique can be used for visualization of Josephson vortices and for probing their spatial configurations and mutual interaction.

AB - The ability to control Josephson vortices is instrumental for development of superconducting cryoelectronics. However, direct visualization of multivortex states in Josephson junctions is a challenging task. Here, we employ a magnetic force microscopy (MFM) for the analysis of planar Josephson junctions. We observe a specific MFM response, seen as a chain of small rings. By changing the applied field, we show that the number of rings is equal to the number of flux quanta in the junction. Therefore, each ring represents an individual vortex in a one-dimensional vortex chain within the junction. Our observation demonstrates that the MFM technique can be used for visualization of Josephson vortices and for probing their spatial configurations and mutual interaction.

U2 - DOI: 10.1103/PhysRevResearch.2.023105

DO - DOI: 10.1103/PhysRevResearch.2.023105

M3 - Article

VL - 2

SP - 1

JO - Physical Review Research

JF - Physical Review Research

SN - 2643-1564

IS - 2

M1 - 023105

ER -

Observation of Interacting Josephson vortex chains by magnetic force microscopy

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