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Journal article
Transverse instabilities of multiple vortex chains in magnetically coupled NbSe2/permalloy superconductor/ferromagnet bilayers
Physical review. B, v 80(18)
01 Nov 2009
Abstract
Using scanning tunneling microscopy and Ginzburg-Landau simulations, we explore vortex configurations in magnetically coupled NbSe2/permalloy superconductor/ferromagnet bilayer. The permalloy film with stripe domain structure induces periodic local magnetic induction in the superconductor, creating a series of pinning-antipinning channels for externally added magnetic flux quanta. Such laterally confined Abrikosov vortices form quasi-one-dimensional arrays (chains). The transitions between multichain states occur through propagation of kinks at the intermediate fields. At high fields we show that the system becomes nonlinear due to a change in both the number of vortices and the confining potential. The longitudinal instabilities of the resulting vortex structures lead to vortices "levitating" in the antipinning channels.
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Details
- Title
- Transverse instabilities of multiple vortex chains in magnetically coupled NbSe2/permalloy superconductor/ferromagnet bilayers
- Creators
- G. Karapetrov - Argonne National LaboratoryM. V. Milosevic - University of AntwerpM. Iavarone - Argonne National LaboratoryJ. Fedor - Slovak Academy of SciencesA. Belkin - Argonne National LaboratoryV. Novosad - Argonne National LaboratoryF. M. Peeters - University of Antwerp
- Publication Details
- Physical review. B, v 80(18)
- Publisher
- Amer Physical Soc
- Number of pages
- 4
- Grant note
- Center for Nanoscale Materials Electron Microscopy Center at Argonne National Laboratory ESF-AQDJJ network Vlaanderen-USA bilateral program JSPS/ESF-NES; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); Japan Society for the Promotion of Science FWO-Vl / Flemish Science Foundation; FWO Belgian Science Policy; Belgian Federal Science Policy Office DE-AC02-06CH11357 / U.S. Department of Energy Office of Science laboratory; United States Department of Energy (DOE)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000272310900031
- Scopus ID
- 2-s2.0-73249145795
- Other Identifier
- 991019295182904721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Physics, Applied
- Physics, Condensed Matter