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Magnetic invisibility of the magnetically coated type-II superconductor in partially penetrated state

Peña-Roche, J. ; Genenko, Y. A. ; Badía-Majós, A. (2016)
Magnetic invisibility of the magnetically coated type-II superconductor in partially penetrated state.
In: Applied Physics Letters, 109 (9)
doi: 10.1063/1.4961672
Article, Bibliographie

Abstract

The magnetic behavior of a cylindrical paramagnet/superconductor heterostructure has been studied by numerical simulations. Relying on the variational statement of the critical state model, our results show that magnetic invisibility is compatible with the partial penetration regime in the superconductor. This result accomplishes previous analytic studies that proved a possible perfect undetectability for the full penetration of magnetic flux. For a given geometry, invisibility may be realized only at a certain magnitude of the applied field. Such value decreases with increasing permeability of the magnetic sheath and eventually collapses to zero. This establishes a condition for obtaining realizable invisibility that extends previous expectations relying either on the full penetration ansatz or on perfect diamagnetism.

Item Type: Article
Erschienen: 2016
Creators: Peña-Roche, J. ; Genenko, Y. A. ; Badía-Majós, A.
Type of entry: Bibliographie
Title: Magnetic invisibility of the magnetically coated type-II superconductor in partially penetrated state
Language: English
Date: 29 August 2016
Journal or Publication Title: Applied Physics Letters
Volume of the journal: 109
Issue Number: 9
DOI: 10.1063/1.4961672
Abstract:

The magnetic behavior of a cylindrical paramagnet/superconductor heterostructure has been studied by numerical simulations. Relying on the variational statement of the critical state model, our results show that magnetic invisibility is compatible with the partial penetration regime in the superconductor. This result accomplishes previous analytic studies that proved a possible perfect undetectability for the full penetration of magnetic flux. For a given geometry, invisibility may be realized only at a certain magnitude of the applied field. Such value decreases with increasing permeability of the magnetic sheath and eventually collapses to zero. This establishes a condition for obtaining realizable invisibility that extends previous expectations relying either on the full penetration ansatz or on perfect diamagnetism.

Additional Information:

SFB 595

Divisions: 11 Department of Materials and Earth Sciences > Material Science > Materials Modelling
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 20 Sep 2016 10:45
Last Modified: 20 Sep 2016 11:17
PPN:
Funders: Funding by Spanish MINECO and FEDER program (ENE2014-52105-R-9 project), DGA Grant No. T12, and partial support by the German DFG within the collaborative research center SFB 595 are gratefully acknowledged.
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