Article (Scientific journals)
Nucleation of superconductivity and vortex matter in superconductor-ferromagnet hybrids
Aladyshkin, A Yu; Silhanek, Alejandro; Gillijns, W. et al.
2009In Superconductor Science and Technology, 22 (5)
Peer Reviewed verified by ORBi
 

Files


Full Text
Aladyshkin-SUSTReview-2009.pdf
Publisher postprint (3.88 MB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
superconductivity; ferromagnetism
Abstract :
[en] The theoretical and experimental results concerning the thermodynamical and low-frequency transport properties of hybrid structures, consisting of spatially separated conventional low-temperature superconductors (S) and ferromagnets (F), are reviewed. Since the superconducting and ferromagnetic parts are assumed to be electrically insulated, no proximity effect is present and thus the interaction between both subsystems is through their respective magnetic stray fields. Depending on the temperature range and the value of the external field H(ext), different behavior of such S/F hybrids is anticipated. Rather close to the superconducting phase transition line, when the superconducting state is only weakly developed, the magnetization of the ferromagnet is solely determined by the magnetic history of the system and it is not influenced by the field generated by the supercurrents. In contrast to that, the nonuniform magnetic field pattern, induced by the ferromagnet, strongly affects the nucleation of superconductivity, leading to an exotic dependence of the critical temperature T(c) on H(ext). Deeper in the superconducting state the effect of the screening currents cannot be neglected anymore. In this region of the phase diagram T-H(ext) various aspects of the interaction between vortices and magnetic inhomogeneities are discussed. In the last section we briefly summarize the physics of S/F hybrids when the magnetization of the ferromagnet is no longer fixed but can change under the influence of the superconducting currents. As a consequence, the superconductor and ferromagnet become truly coupled and the equilibrium configuration of this 'soft' S/F hybrid requires rearrangements of both superconducting and ferromagnetic characteristics, as compared with 'hard' S/F structures.
Disciplines :
Physics
Author, co-author :
Aladyshkin, A Yu
Silhanek, Alejandro  ;  Katholieke Universiteit Leuven - KUL
Gillijns, W.
Moshchalkov, V. V.
Language :
English
Title :
Nucleation of superconductivity and vortex matter in superconductor-ferromagnet hybrids
Publication date :
2009
Journal title :
Superconductor Science and Technology
ISSN :
0953-2048
eISSN :
1361-6668
Publisher :
Institute of Physics, Bristol, United Kingdom
Volume :
22
Issue :
5
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 10 November 2011

Statistics


Number of views
63 (1 by ULiège)
Number of downloads
0 (0 by ULiège)

Scopus citations®
 
205
Scopus citations®
without self-citations
175
OpenCitations
 
191

Bibliography


Similar publications



Contact ORBi