Article (Scientific journals)
Laser engineered architectures for magnetic flux manipulation on superconducting Nb thin films
Martínez, Elena; Lejeune, Nicolas; Frechilla, Javier et al.
2025In Applied Surface Science, 679, p. 161214
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Keywords :
Critical current density; Laser-induced periodic surface structures (LIPSS); Magnetic flux; Magneto-optical imaging (MOI); 'current; Anisotropic pinning; Laser-induced periodic surface structure; Laser-induced periodic surface structures; Magneto-optical imaging; Magnetooptical imaging; NanoPatterning; Preferential pathways; Thin-films; Condensed Matter Physics; Surfaces and Interfaces; Surfaces, Coatings and Films
Abstract :
[en] Custom shaped magnetic flux guiding channels have been fabricated on superconducting Nb thin films by laser nanopatterning of their surface. Preferential pathways are defined by suitable combination of imprinted anisotropic pinning domains through laser-induced periodic surface structures (LIPSS). Generated by the selective energy deposition of femtosecond UV laser pulses, quasi-parallel ripple structures are formed under optimized irradiation conditions. On average, each domain is formed by grooves with a lateral period of 260–270 nm and a depth about 80 nm. By combination of scanning and transmission electron microscopy, magneto-optical imaging, and conductive atomic force microscopy techniques, we conclude that the boundaries of the LIPSS-covered domains play a prominent role in the magnetic flux diversion process within the film. This is confirmed by dedicated modeling of the flux dynamics, combined with the inversion of the magneto-optical signal. The created metasurfaces enable control of the flux penetration process at the microscale.
Research Center/Unit :
Q-MAT - Quantum Materials - ULiège
Disciplines :
Physics
Author, co-author :
Martínez, Elena  ;  Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza, Spain
Lejeune, Nicolas   ;  Université de Liège - ULiège > Quantum Materials (Q-MAT)
Frechilla, Javier ;  Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza, Spain
Porta-Velilla, Luis ;  Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza, Spain
Fourneau, Emile  ;  Université de Liège - ULiège > Département de physique > Physique expérimentale des matériaux nanostructurés
Angurel, Luis A.;  Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza, Spain
de la Fuente, Germán F. ;  Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza, Spain
Bonse, Jörn ;  Bundesanstalt für Materialforschung und –prüfung (BAM), Berlin, Germany
Silhanek, Alejandro  ;  Université de Liège - ULiège > Département de physique > Physique expérimentale des matériaux nanostructurés
Badía-Majós, Antonio ;  Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza, Spain
 These authors have contributed equally to this work.
Language :
English
Title :
Laser engineered architectures for magnetic flux manipulation on superconducting Nb thin films
Publication date :
15 January 2025
Journal title :
Applied Surface Science
ISSN :
0169-4332
eISSN :
1873-5584
Publisher :
Elsevier B.V.
Volume :
679
Pages :
161214
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
FRIA - Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture
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