Article (Scientific journals)
Magnetic confinement of the superconducting condensate in superconductor-ferromagnet hybrid composites
Gillijns, W.; Aladyshkin, A Yu; Silhanek, Alejandro et al.
2007In Physical Review. B, Condensed Matter, 76 (6)
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Keywords :
superconductivity
Abstract :
[en] 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.
Disciplines :
Physics
Author, co-author :
Gillijns, W.
Aladyshkin, A Yu
Silhanek, Alejandro  ;  Katholieke Universiteit Leuven - KUL
Moshchalkov, V. V.
Language :
English
Title :
Magnetic confinement of the superconducting condensate in superconductor-ferromagnet hybrid composites
Publication date :
2007
Journal title :
Physical Review. B, Condensed Matter
ISSN :
0163-1829
eISSN :
1095-3795
Publisher :
American Institute of Physics, New York, United States - New York
Volume :
76
Issue :
6
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 10 November 2011

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