Electronic structure of a Josephson vortex in a SIS junction

The Josephson vortex formed in a superconductor-insulator-superconductor\n(SIS) junction can affect the quantum mechanics of quasiparticles by creating\nan effective adiabatic potential determined by the inhomogeneous distribution\nof the phase difference of the order parameter along the junction. Starting\nfrom the quasiclassical version of the Bogoliubov-de Gennes (BdG) theory, we\nfound the quasiparticle spectrum and the local density of states (DOS) both for\nthe isolated Josephson vortex and the vortex chain. The spatially resolved DOS\nreveals a peculiar two-peak structure for each Josephson vortex, which can be\ndetected experimentally using the scanning tunneling microscopy/spectroscopy\ntechniques.\n