Manara - Qatar Research Repository
Browse
10.1038_s41598-018-21015-7.pdf (7.39 MB)

Josephson vortex loops in nanostructured Josephson junctions

Download (7.39 MB)
journal contribution
posted on 2022-11-22, 21:16 authored by G. R. Berdiyorov, M. V. Milošević, F. Kusmartsev, F. M. Peeters, S. Savel’ev

Linked and knotted vortex loops have recently received a revival of interest. Such three-dimensional topological entities have been observed in both classical- and super-fluids, as well as in optical systems. In superconductors, they remained obscure due to their instability against collapse – unless supported by inhomogeneous magnetic field. Here we reveal a new kind of vortex matter in superconductors - the Josephson vortex loops - formed and stabilized in planar junctions or layered superconductors as a result of nontrivial cutting and recombination of Josephson vortices around the barriers for their motion. Engineering latter barriers opens broad perspectives on loop manipulation and control of other possible knotted/linked/entangled vortex topologies in nanostructured superconductors. In the context of Josephson devices proposed to date, the high-frequency excitations of the Josephson loops can be utilized in future design of powerful emitters, tunable filters and waveguides of high-frequency electromagnetic radiation, thereby pushing forward the much needed Terahertz technology.

Other Information

Published in: Scientific Reports
License: http://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1038/s41598-018-21015-7

History

Language

  • English

Publisher

Springer Science and Business Media LLC

Publication Year

  • 2018

Institution affiliated with

  • Hamad Bin Khalifa University

Usage metrics

    Manara - Qatar Research Repository

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC