53 citations · 270 across the 15 of their papers we have counts for
15 papers
NiTi Single Crystal Growth by Micro-Pulling-Down Method: Experimental Setup and Material Characterization
Timon Sieweke, Chris Luther, Martin Wortmann +14
Nickel-titanium that has an austenite to martensite phase transition has been studied extensively in the past as a shape memory alloy, but a lot remains to be learned from such pha…
Depth Profiling of Oxygen Migration in Ta/HfO2 Stacks During Ionic Liquid Gating
Beatrice Bednarz, Martin Wortmann, Olga Kuschel +6
Ionic liquid (IL) gating has emerged as a powerful tool to control the structural, electronic, optical, and magnetic properties of materials by driving ion motion at solid interfac…
Surface Oxidation of SnTe Analyzed by Self-Consistent Fitting of all Emission Peaks in its X-ray Photoelectron Spectrum
Martin Wortmann, Beatrice Bednarz, Negin Beryani Nezafat +11
X-ray photoelectron spectroscopy (XPS) is among the most widely used methods for surface characterization. Currently, the analysis of XPS data is almost exclusively based on the ma…
Role of NiO in the nonlocal spin transport through thin NiO films on YFeO
Geert R. Hoogeboom, Geert-Jan N. Sint Nicolaas, Andreas Alexander +5
In spin transport experiments with spin currents propagating through antiferromagnetic (AFM) material, the antiferromagnet is treated as a mainly passive spin conductor not generat…
Quadratic magnetooptic Kerr effect spectroscopy of Fe epitaxial films on MgO(001) substrates
Robin Silber, Ondřej Stejskal, Lukáš Beran +9
The magnetooptic Kerr effect (MOKE) is a well known and handy tool to characterize ferro-, ferri- and antiferromagnetic materials. Many of the MOKE techniques employ effects solely…
Impact of magnetic moment and anisotropy of CoFe thin films on the magnetic proximity effect of Pt
Panagiota Bougiatioti, Orestis Manos, Olga Kuschel +4
We present a systematic study of the magnetic proximity effect in Pt, depending on the magnetic moment and anisotropy of adjacent metallic ferromagnets. Element-selective x-ray res…
Real-time monitoring of the structure of ultra thin FeO films during growth on Nb-doped SrTiO(001)
Olga Kuschel, Wanja Spiess, Tobias Schemme +3
In this work thin magnetite films were deposited on SrTiO via reactive molecular beam epitaxy at different substrate temperatures. The growth process was monitored in-situ duri…
Quantitative disentanglement of spin Seebeck, proximity-induced and intrinsic anomalous Nernst effect in NM/FM bilayers
Panagiota Bougiatioti, Christoph Klewe, Daniel Meier +8
We identify and investigate thermal spin transport phenomena in sputter-deposited Pt/NiFeO () bilayers. We separate the voltage generated by th…
Impact of strain and morphology on magnetic properties of FeO/NiO bilayers grown on Nb:SrTiO(001) and MgO(001)
Olga Kuschel, Nico Pathé, Tobias Schemme +7
We present a comparative study on the morphology and structural as well as magnetic properties of crystalline FeO/NiO bilayers grown on both MgO(001) and SrTiO(001) sub…
Static Magnetic Proximity Effect in Pt Layers on Sputter-Deposited NiFe2O4 and on Fe of Various Thicknesses Investigated by XRMR
Timo Kuschel, Christoph Klewe, Panagiota Bougiatioti +7
The longitudinal spin Seebeck effect is detected in sputter-deposited NiFe2O4 films using Pt as a spin detector and compared to previously investigated NiFe2O4 films prepared by ch…
Electronic and magnetic structure of epitaxial NiO/FeO(001) heterostructures grown on MgO(001) and Nb-doped SrTiO(001)
K. Kuepper, O. Kuschel, N. Pathé +8
We study the underlying chemical, electronic and magnetic properties of a number of magnetite based thin films. The main focus is placed onto NiO/FeO(001) bilayers grown on…
From FeO/NiO bilayers to NiFeO-like thin films through Ni interdiffusion
O. Kuschel, R. Buß, W. Spiess +7
Ferrites with (inverse) spinel structure display a large variety of electronic and magnetic properties making some of them interesting for potential applications in spintronics. We…
Static magnetic proximity effect in Pt/NiFe bilayers investigated by x-ray resonant magnetic reflectivity
Christoph Klewe, Timo Kuschel, Jan-Michael Schmalhorst +6
We present x-ray resonant magnetic reflectivity (XRMR) as a very sensitive tool to detect proximity induced interface spin polarization in Pt/Fe, Pt/NiFe, Pt/Ni$_{81}…
Structure and morphology of epitaxially grown Fe3O4/NiO bilayers on MgO(001)
Tobias Schemme, Olga Kuschel, Florian Bertram +2
Crystalline Fe3O4/NiO bilayers were grown on MgO(001) substrates using reactive molecular beam epitaxy to investigate their structural properties and their morphology. The film thi…
Sign change in the tunnel magnetoresistance of Fe3O4/MgO/Co-Fe-B magnetic tunnel junctions depending on the annealing temperature and the interface treatment
Luca Marnitz, Karsten Rott, Stefan Niehörster +12
Magnetite (Fe3O4) is an eligible candidate for magnetic tunnel junctions (MTJs) since it shows a high spin polarization at the Fermi level as well as a high Curie temperature of 58…