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MA: Fachverband Magnetismus
MA 59: Posters Magnetism III
MA 59.47: Poster
Freitag, 20. März 2020, 09:00–12:00, P2/EG
Domain-Superconductivity in Nb/FePd with lateral inhomogeneous magnetization — •Annika Stellhorn1, Anirban Sarkar1, Emmanuel Kentzinger1, Sonja Schröder1, Grigol Abuladze1, Markus Waschk1, Tanvi Bhatnagar1,2, Patrick Schöffman3, Zhendong Fu3, Vitaliy Pipich3, Kathryn Krycka4, Juri Barthel5, and Thomas Brückel1,3 — 1Forschungszentrum Jülich GmbH, JCNS-2 and PGI-4, JARA-FIT, Jülich, GERMANY — 2Forschungszentrum Jülich GmbH, PGI-5, Jülich, GERMANY — 3Forschungszentrum Jülich GmbH, JCNS@MLZ, Garching, Germany — 4NIST Center for Neutron Research, NIST, Gaithersburg, USA — 5Forschungszentrum Jülich GmbH, ER-C 2, Jülich, Germany
We aim at understanding the proximity effects in the superconductor-ferromagnet (S/F) interface of Nb(S)/FePd(F) thin film heterostructures, prepared by MBE growth. Proximity effects at S/F interfaces with an inhomogeneous magnetic field texture result in various effects, like domain-wall superconductivity. To reveal the physical origin of each effect, we compare samples with S/F in direct proximity and S/F decoupled by a thin MgO layer. Measurements of the resistivity and magnetization show striking differences in their critical temperature and the critical field values. According to our results, we ascribe the observed domain-wall and reverse-domain superconductivity to the long-range magnetic interactions. Using polarized neutron scattering techniques, we focus on revealing the lateral magnetic depth profile of the heterostructures as function of temperature.