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Journal article
Vortex-antivortex coexistence in Nb-based superconductor/ferromagnet heterostructures
Physical review. B, Condensed matter and materials physics, v 89(21)
04 Jun 2014
Abstract
Low-temperature magnetic force microscopy was used to study the threshold of nucleation of spontaneous vortex-antivortex structures in superconductor/ferromagnet (S/F) hybrid systems. We investigated S/F heterostructures composed of Py as the magnetic material and Nb as the superconductor, with different thicknesses of Py and Nb. The condition for nucleation of spontaneous vortex-antivortex structures depends on fundamental parameters such as the superconducting penetration depth and the coherence length, as well as on the thickness of the superconducting film and the magnetic domain width. We compare our experimental results with those of existing theoretical models and provide an estimate of the threshold of the local out-of-plane component of the magnetization for different Py film thicknesses.
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Details
- Title
- Vortex-antivortex coexistence in Nb-based superconductor/ferromagnet heterostructures
- Creators
- F. Bobba - University of SalernoC. Di Giorgio - University of SalernoA. Scarfato - University of SalernoM. Longobardi - University of GenevaM. Iavarone - Temple UniversityS. A. Moore - Temple UniversityG. Karapetrov - Drexel UniversityV. Novosad - Argonne National LaboratoryV. Yefremenko - Argonne National LaboratoryA. M. Cucolo - University of SalernoArgonne National Lab. (ANL), Argonne, IL (United States)
- Publication Details
- Physical review. B, Condensed matter and materials physics, v 89(21)
- Publisher
- Amer Physical Soc
- Number of pages
- 7
- Grant note
- DE-AC02-06CH11357 / U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES); United States Department of Energy (DOE) DE-SC0004556 / U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES), Division of Materials Sciences and Engineering; United States Department of Energy (DOE) MIUR (Italian Ministry for Higher Education and Research) under the project "Rientro dei Cervelli"; Ministry of Education, Universities and Research (MIUR)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000336915900002
- Scopus ID
- 2-s2.0-84902168457
- Other Identifier
- 991019168163604721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Physics, Applied
- Physics, Condensed Matter