Title: Phase diagram of a superconductor/ferromagnet bilayer
Authors: Lange, Martin ×
Van Bael, Margriet
Moshchalkov, Victor #
Issue Date: Nov-2003
Publisher: Published by the American Physical Society through the American Institute of Physics
Series Title: Physical Review B, Condensed Matter and Materials Physics vol:68 issue:17 pages:1-6
Article number: 174522
Abstract: The magnetic-field-temperature (H-T) phase diagram of a superconductor is significantly altered when domains are present in an underlying ferromagnet with perpendicular magnetic anisotropy. When the domains have a bandlike shape, the critical temperature T-c of the superconductor in zero field is strongly reduced and the slope of the upper critical field as a function of T is increased by a factor of 2.4 due to the inhomogeneous stray fields of the domains. Field compensation effects can cause an asymmetric phase boundary with respect to H when the ferromagnet contains bubble domains. For a very inhomogeneous domain structure, T(c)proportional toH(2) for low H and T(c)proportional toH for higher fields, indicating a dimensional crossover from a one-dimensional networklike to a two-dimensional behavior in the nucleation of superconductivity.
ISSN: 1098-0121
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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