Scanning gate microscopy imaging of the supercurrent distribution in a planar Josephson junction
K. Kaperek,
S. Heun,
M. Carrega
et al.
Abstract:We theoretically investigate the mapping of the supercurrent distribution in a planar superconductor-normal-superconductor junction in the presence of a perpendicular magnetic field via the scanning gate microscopy technique. We find that the change of the critical current induced by the scanning probe tip reflects the distribution of counter-propagating supercurrents aligned in Josephson vortices provided that the flux in the junction is set close to Fraunhofer pattern maxima. Instead, when the magnetic field… Show more
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