Publikationsdatenbank

Rhombohedral rare earth ferrites RFe2O4 have a strong tendency for coupled charge (Fe2+/3+) andspin order, despite the strong geometrical frustration of the interactions [1]. For R=Lu or Yb correspondingsuperstructure reflections or diffuse scattering appear at ( 1313 ℓ). [...]

Transition metal oxides, particularly those with partially filled 3d shells, have been the playgroundfor solid-state physics for many decades. These correlated oxides exhibit a competition betweencoulombic repulsion, which tends to localize electrons, and hybridization, which promotes delocalization,that leads to numerous many-body effects such as metal-insulator transitions, colossalmagnetoresistance and superconductivity, to name but a few. [...]

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] [...]