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oai:docta.ucm.es:20.500.14352/64812023-08-28T09:58:45Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Ory, M.C. de author Rollano, V. author Gómez, A. author Menghini, M. author Muñoz Noval, Álvaro author González Herrera, Elvira María author Vicent López, José Luis author 2020-06-25 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. 2045-2322 10.1038/s41598-020-67317-7 https://hdl.handle.net/20.500.14352/6481 http://dx.doi.org/10.1038/s41598-020-67317-7 https://www.nature.com/ Little-Parks effect governed by magnetic nanostructures with out-of-plane magnetization