Title: Magnetic confinement of the superconducting condensate in superconductor-ferromagnet hybrid composites
Authors: Gillijns, Werner ×
Aladyshkin, AYu
Silhanek, Alejandro
Moshchalkov, Victor #
Issue Date: Aug-2007
Publisher: Published by the American Physical Society through the American Institute of Physics
Series Title: Physical Review B, Condensed Matter and Materials Physics vol:76 issue:6
Conference: date:Katholieke Univ Leuven, Nanoscale Superconduct & Magnetism & Pulsed Field, Inst Nanoscale Phys & Chem, INPAC, B-3001 Louvain, Belgium; Russian Acad Sci, Inst Phys Microstruct, Nizhnii Novgorod 603950, Russia
Article number: 060503
Abstract: The influence of an inhomogeneous magnetic field on the magnetoresistance of thin Al films, used in different superconductor-ferromagnet hybrids, has been investigated. Two contrasting magnetic textures with out-of-plane magnetization are explored: namely, (i) a plain film in a multidomain state and (ii) an array of microsized dots. The stray fields of the ferromagnetic structures confine the superconducting condensate and, accordingly, modify the condition for the nucleation of superconductivity. By switching between different magnetic states of the ferromagnet, this confinement can be tuned at will, thereby reversibly changing the dependence of the critical temperature T-c on an external magnetic field H. In particular, continuous evolution from a conventional linear T-c(H) dependence with a single maximum to a reentrant superconducting phase boundary with multiple T-c peaks has been demonstrated.
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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