Abstract:
:Little-Parks effect names the oscillations in the superconducting critical temperature as a function of the magnetic field. This effect is related to the geometry of the sample. In this work, we show that this effect can be enhanced and manipulated by the inclusion of magnetic nanostructures with perpendicular magnetization. These magnetic nanodots generate stray fields with enough strength to produce superconducting vortex-antivortex pairs. So that, the L-P effect deviation from the usual geometrical constrictions is due to the interplay between local magnetic stray fields and superconducting vortices. Moreover, we compare our results with a low-stray field sample (i.e. with the dots in magnetic vortex state) showing how the enhancement of the L-P effect can be explained by an increment of the effective size of the nanodots.
journal_name
Sci Repjournal_title
Scientific reportsauthors
de Ory MC,Rollano V,Gomez A,Menghini M,Muñoz-Noval A,Gonzalez EM,Vicent JLdoi
10.1038/s41598-020-67317-7subject
Has Abstractpub_date
2020-06-25 00:00:00pages
10370issue
1issn
2045-2322pii
10.1038/s41598-020-67317-7journal_volume
10pub_type
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