Meissner-London currents in superconductors with rectangular cross section

Details Meissner-London currents in superconductors with rectangular cross section Meissner-London currents in superconductors with rectangular cross section

2000-08-17

arxiv.org/abs/cond-mat/0008260v1

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1103/PhysRevLett.85.4164

Exact analytic solutions are presented for the magnetic moment and screening currents in the Meissner state of superconductor strips with rectangular cross section in a perpendicular magnetic field and/or with transport current. The extension to finite London penetration is achieved by an elegant numerical method which works also for disks. The surface current in the specimen corners diverges as l^(-1/3) where l is the distance from the corner. This enhancement reduces the barrier for vortex penetration and should increase the nonlinear Meissner effect in d-wave superconductors.

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