Paramagnetic intrinsic Meissner effect in a bulk
Abstract
We calculate the free energy of a quasitwodimensional (Q2D) superconductor with ξ_{⊥} < d in a parallel magnetic field, where ξ_{⊥} is a perpendicular to the conducting layer coherence length and d is the interlayer distance. It is shown to be different from that in the famous LawrenceDoniach model. In particular, at high enough magnetic fields, the Meissner currents are found to create an unexpected paramagnetic moment due to the shrinking of the Cooper pairs “sizes” in a direction perpendicular to the conducting layers. We suggest measuring this paramagnetic intrinsic Meissner effect in Q2D superconductors and superconducting superlattices.
 Publication:

Soviet Journal of Experimental and Theoretical Physics Letters
 Pub Date:
 October 2008
 DOI:
 10.1134/S0021364008150125
 Bibcode:
 2008JETPL..88..201L
 Keywords:

 74.20.Rp;
 74.25.Op;
 74.70.Kn