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| Home > Publications database > Inverse proximity effect in a ferromagnet-superconductor thinfilm heterostructure investigated by GISANS with polarizationanalysis |
| Conference Presentation (Invited) | FZJ-2025-04082 |
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2025
Abstract: Three direct proximity effects in ferromagnet-superconducting thin film heterostructures of Nb andFePd with a lateral domain pattern have been found by temperature dependent electrical resistivitymeasurements, showing the influence of the magnetic domain structure on the superconductingstate: reversed domain superconductivity, domain wall superconductivity and generation of spintripletCooper pairs [1].In this system, the inverse proximity effect, i.e. the effect of the entrance in the superconducting stateon the magnetic structure has been studied by temperature dependent grazing incidence small angleneutron scattering (GISANS) on the KWS-3 diffractometer at the Heinz Maier-Leibnitz Zentrum [2]and by GISANS with polarization analysis on vSANS at the NIST Center for Neutron Research [3,4].Guided by micromagnetic simulations [5], we present in this contribution simulations of the GISANSdata within the distorted wave Born approximation [6,7]. We find that the domain walls width inFePd with strong perpendicular magnetic anisotropy increases when Nb enters the superconductingstate [8].[1] A. Stellhorn et al., New Journal of Physics, 22, 093001 (2020).[2] Heinz Maier-Leibnitz Zentrum, Journal of Large-Scale Research Facilities 1, A31 (2015)[3] J. Barker et al., Journal of Applied Crystallography, 55, 271 (2022)[4] W.C. Chen et al., Journal of Physics: Conference Series, 2481, 012006 (2023)[5] B. Vermeulen, Master Thesis, University of Liège and Forschungszentrum Jülich (2021) http://hdl.handle.net/2268.2/11448[6] B.P. Toperverg, The Physics of Metals and Metallography, 116, 1337 (2015)[7] E. Kentzinger et al., Physical Review B, 77, 104435 (2008)[8] A. Stellhorn, PhD Thesis, RWTH Aachen University (2021)
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