Magnetic penetration depth and vortex structure in anharmonic superconducting junctions with an interfacial pair breaking

Abstract

The penetration depth l_j in superconducting junctions is identified within the Ginzburg-Landau theory as a function of the interfacial pair breaking, of the magnetic field and of the Josephson coupling strength. When the interfacial pair breaking goes up, l_j increases and an applicability of the local Josephson electrodynamics to junctions with a strong Josephson coupling is extended. In the junctions with strongly anharmonic current-phase relations, the magnetic field dependence of l_j is shown to lead to a significant difference between the weak-field penetration depth and the characteristic size of the Josephson vortex. For such junctions a nonmonotonic dependence of l_j and of the lower critical field on the Josephson coupling constant is found, and the specific features of spatial profiles of the supercurrent and the magnetic field in the Josephson vortex are established.

13 pages, 8 figures, published version

References in corpus (4)

• Evidence for nonlocal electrodynamics in planar Josephson junctions
• Josephson junctions in narrow thin-film strips
• Probing interfacial pair breaking in tunnel junctions based on the first and the second harmonics of the Josephson current
• Non-Fraunhofer patterns of the anharmonic Josephson current influenced by a strong interfacial pair breaking

Cited by in corpus (3)

• Proximity-induced minimum radius of superconducting thin rings closed by the Josephson 0 or pi junction
• The effect of an external magnetic field on the maximum current of SNINS junctions near the critical temperature
• Boundary conditions for the order parameter and the proximity influenced internal phase differences in double superconducting junctions