Paramagnetic intrinsic Meissner effect in a bulk
A. G. Lebed
Department of Physics, University of Arizona, 1118 E., AZ 85721, USA
L.D. Landau Institute for Theoretical Physics RAS, 117334 Moscow, Russia
PACS: 74.20.Rp, 74.25.Op, 74.70.Kn
Abstract
We calculate a free energy of a quasi-two-dimensional (Q2D)
superconductor with in a parallel magnetic field,
where is a perpendicular to the conducting layers
coherence length and d is an interlayers
distance.
It is shown to be different from that in the famous Lawrence-Doniach
model.
In particular, at high enough magnetic fields, the Meissner currents
are found to create an unexpected paramagnetic moment due to
shrinking of the Cooper pairs "sizes" in a direction perpendicular to
the conducting layers.
We suggest to measure this paramagnetic intrinsic Meissner effect
in Q2D superconductors and superconducting
super-lattices.