Browsing by Author "Rode, Karsten"
Now showing items 1-16 of 16
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Antiferromagnetic single-layer spin-orbit torque oscillators
(2019)We show how a charge current through a single antiferromagnetic layer can excite and control self-oscillations. Sustained oscillations with tunable amplitudes and frequencies are possible in a variety of geometries using ... -
Effect of insertion layer on electrode properties in magnetic tunnel junctions with a zero-moment half-metal
(2019)Due to its negligible spontaneous magnetization, high spin polarization and giant perpendicular magnetic anisotropy, Mn2RuxGa (MRG) is an ideal candidate as an oscillating layer in THz spin-transfertorque nano-oscillators. ... -
Exchange-driven all-optical magnetic switching in compensated 3d ferrimagnets
(2020)Understanding how a single laser pulse can toggle magnetization in a compensated 3d ferrimagnet is a critical problem in ultrafast magnetism. To resolve it, we test single-shot all-optical switching of magnetization in Mn ... -
Magnetic order and magnetotransport in half-metallic ferrimagnetic MnyRuxGa thin films
(2021)The ruthenium content of half-metallic Mn2RuxGa thin films, with a biaxially strained inverse Heusler structure, controls the ferrimagnetism that determines their magnetic and electronic properties. An extensive study of ... -
Magnetic reversal and pinning in a perpendicular zero-moment half-metal
(2021)Compensated ferrimagnets are promising materials for fast spintronic applications based on domain-wall motion as they combine the favorable properties of ferromagnets and antiferromagnets. They inherit from antiferromagnets ... -
Magnetization and anisotropy of cobalt ferrite thin films
(2017)The magnetization of thin films of cobalt ferrite frequently falls far below the bulk value of 455kAm−1, which corresponds to an inverse cation distribution in the spinel structure with a significant orbital moment of about ... -
Magneto-optic Kerr effect in a spin-polarized zero-moment ferrimagnet
(2018)The magneto-optical Kerr effect (MOKE) is often assumed to be proportional to the magnetization of a magnetically ordered metallic sample; in metallic ferrimagnets with chemically distinct sublattices, such as rare-earth ... -
Magnetocrystalline anisotropy and exchange probed by high-field anomalous Hall effect in fully compensated half-metallic Mn2RuxGa thin films
(2018)Magnetotransport is investigated in thin films of the half-metallic ferrimagnet Mn2RuxGa in pulsed magnetic fields of up to 58 T. A nonvanishing Hall signal is observed over a broad temperature range, spanning the compensation ... -
Pauli paramagnetism of cubic V3Al, CrVTiAl, and related 18-electron Heusler compounds with a group-13 element
(2021)Calculations suggest that ordered Heusler alloys with 18 valance electrons could exhibit a variety of unusual electronic and magnetic states that are absent in the constituent elements. They include magnetic semiconductors, ... -
Single pulse all-optical toggle switching of magnetization without gadolinium in the ferrimagnet Mn2RuxGa
(2020)Energy-efficient control of magnetization without the help of a magnetic field is a key goal of spintronics. Purely heat-induced single-pulse all-optical toggle switching has been demonstrated, but so far only in Gd-based ... -
Stability of Mn2RuxGa-based multilayer stacks
(2022)Perpendicular heterostructures based on a ferrimagnetic Mn2RuxGa (MRG) layer and a ferromagnetic Co/Pt multilayer were examined to understand the effects of different spacer layers (V, Mo, Hf, HfOx and TiN) on the interfaces ... -
Sub-picosecond exchange-relaxation in the compensated ferrimagnet Mn2RuxGa
(2021)We study the demagnetization dynamics of the fully compensated half-metallic ferrimagnet Mn2RuxGa. While the two antiferromagnetically coupled sublattices are both composed of manganese, they exhibit different temperature ... -
Ultrafast Double Pulse All-Optical Reswitching of a Ferrimagnet
(2021)All-optical reswitching has been investigated in the half-metallic Heusler ferrimagnet Mn2Ru0.9Ga, where Mn atoms occupy two inequivalent sites in the XA-type structure. The effect of a second 200 fs, 800 nm laser pulse ... -
The zero-moment half metal: How could it change spin electronics?
(2016)The Heusler compound Mn2RuxGa (MRG) may well be the first compensated half metal. Here, the structural, magnetic and transport properties of thin films of MRG are discussed. There is evidence of half-metallicity up to x = ...
