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Journal article
Influence of Domain Width on Vortex Nucleation in Superconductor/Ferromagnet Hybrid Structures
Journal of superconductivity and novel magnetism, v 28(3), pp 1107-1110
01 Mar 2015
Abstract
We have investigated the effect of spatially inhomogenous magnetic fields on vortex nucleation in magnetically coupled superconductor/ferromagnet hybrid structures. Using low-temperature scanning tunneling microscopy and spectroscopy (LT-STM/STS) we have studied Pb/[Co-Pd] systems with slightly inhomogeneous magnetic domain width throughout the sample. Visualization of the underlying magnetic template structure is achieved through field dependent conductance maps. In the case of zero applied fields, these maps reveal the absence of vortices below a threshold domain width. At those locations with insufficient domain width to support generation of vortices in zero applied fields, nucleation can be restored through the application of an external magnetic field, with vortices nucleating above the domain parallel to the external field. For the magnetic domain width studied in this work, local tunneling spectroscopy reveals uniform superconducting critical temperature as a function of location, despite of local differences in the stray field experienced by the superconductor.
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Details
- Title
- Influence of Domain Width on Vortex Nucleation in Superconductor/Ferromagnet Hybrid Structures
- Creators
- M. Iavarone - Temple UniversityS. A. Moore - Temple UniversityJ. Fedor - Slovak Academy of SciencesV. Novosad - Argonne National LaboratoryJ. A. Pearson - Argonne National LaboratoryG. Karapetrov - Drexel UniversityArgonne National Lab. (ANL), Argonne, IL (United States)
- Publication Details
- Journal of superconductivity and novel magnetism, v 28(3), pp 1107-1110
- Publisher
- Springer Nature
- Number of pages
- 4
- 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, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering; United States Department of Energy (DOE)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000350360800066
- Scopus ID
- 2-s2.0-84938203950
- Other Identifier
- 991019168446704721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Physics, Applied
- Physics, Condensed Matter