297 citations · 1.6k across the 45 of their papers we have counts for
17 papers · 1 filter
Observation of an unexpected negative magnetoresistance in magnetic Weyl semimetal CoSnS
Ali G. Moghaddam, Kevin Geishendorf, Richard Schlitz +8
Time-reversal symmetry breaking allows for a rich set of magneto-transport properties related to electronic topology. Focusing on the magnetic Weyl semimetal CoSnS, we…
Macroscopic time reversal symmetry breaking by staggered spin-momentum interaction
Helena Reichlová, Rafael Lopes Seeger, Rafael González-Hernández +17
Time-reversal (T) symmetry breaking is a fundamental physics concept underpinning a broad science and technology area, including topological magnets, axion physics, dissipationless…
Non-local magnon-based transport in yttrium iron garnet/platinum heterostructures at high temperatures
Richard Schlitz, Sergey Granovsky, Sebastian T. B. Goennenwein
The spin Hall effect in a heavy metal thin film allows to probe the magnetic properties of an adjacent magnetic insulator via magnetotransport measurements. Here, we investigate th…
Photocurrent measurements in topological insulator nanowires
N. Meyer, K. Geishendorf, J. Walowski +2
Circular photogalvanic currents are a promising new approach for spin-optoelectronics. To date, such currents have only been induced in topological insulator flakes or extended fil…
Thickness dependence of the anomalous Nernst effect and the Mott relation of Weyl-semimetal Co2MnGa thin films
Gyu-Hyeon Park, Helena Reichlova, Richard Schlitz +12
We report a robust anomalous Nernst effect in Co2MnGa thin films in the thickness regime between 20 and 50 nm. The anomalous Nernst coefficient varied in the range of -2.0 to -3.0…
Spin Hall magnetoresistance in heterostructures consisting of noncrystalline paramagnetic YIG and Pt
Michaela Lammel, Richard Schlitz, Kevin Geishendorf +8
The spin Hall magnetoresistance (SMR) effect arises from spin-transfer processes across the interface between a spin Hall active metal and an insulating magnet. While the SMR respo…
All Electrical Access to Topological Transport Features in MnPtSn Films
Richard Schlitz, Peter Swekis, Anastasios Markou +7
The presence of non-trivial magnetic topology can give rise to non-vanishing scalar spin chirality and consequently a topological Hall or Nernst effect. In turn, topological transp…
Tunnel magneto-Seebeck effect
Timo Kuschel, Michael Czerner, Jakob Walowski +5
The interplay of charge, spin and heat transport is investigated in the fascinating research field of spin caloritronics, the marriage of spintronics and thermoelectrics. Here, man…
Large anomalous Nernst effect in thin films of the Weyl semimetal Co2MnGa
Helena Reichlova, Richard Schlitz, Sebastian Beckert +11
The magneto-thermoelectric properties of Heusler compound thin films are very diverse. Here, we discuss the anomalous Nernst response of CoMnGa thin films. We systematically st…
Anomalous Nernst effect on the nanometer scale: Exploring three-dimensional temperature gradients in magnetic tunnel junctions
Ulrike Martens, Torsten Huebner, Henning Ulrichs +8
Localized laser heating creates temperature gradients in all directions and thus leads to three-dimensional electron flux in metallic materials. Temperature gradients in combinatio…
Spin-Hall-Active Platinum Thin Films Grown Via Atomic Layer Deposition
Richard Schlitz, Akinwumi Abimbola Amusan, Michaela Lammel +7
We study the magnetoresistance of yttrium iron garnet/Pt heterostructures in which the Pt layer was grown via atomic layer deposition (ALD). Magnetotransport experiments in three o…
Evolution of the Spin Hall Magnetoresistance in CrO/Pt bilayers close to the Néel temperature
Richard Schlitz, Tobias Kosub, Andy Thomas +4
We study the evolution of magnetoresistance with temperature in thin film bilayers consisting of platinum and the antiferromagnet CrO with its easy axis out of the plane. W…
Pumping laser excited spins through MgO barriers
Ulrike Martens, Jakob Walowski, Thomas Schumann +6
We present a study of the tunnel magneto-Seebeck (TMS) effect in MgO based magnetic tunnel junctions (MTJs). The electrodes consist of CoFeB with in-plane magnetic anisotropy. The…
On/off switching of bit readout in bias-enhanced tunnel magneto-Seebeck effect
Alexander Boehnke, Marius Milnikel, Marvin Walter +8
Thermoelectric effects in magnetic tunnel junctions are currently an attractive research topic. Here, we demonstrate that the tunnel magneto-Seebeck effect (TMS) in CoFeB/MgO/CoFeB…
Time-resolved measurement of the tunnel magneto-Seebeck effect in a single magnetic tunnel junction
Alexander Boehnke, Marvin Walter, Niklas Roschewsky +6
Recently, several groups have reported spin-dependent thermoelectric effects in magnetic tunnel junctions. In this paper, we present a setup for time-resolved measurements of therm…
Parameter space for thermal spin-transfer torque
Johannes Christian Leutenantsmeyer, Marvin Walter, Vladyslav Zbarsky +10
Thermal spin-transfer torque describes the manipulation of the magnetization by the application of a heat flow. The effect has been calculated theoretically by Jia et al. in 2011.…
Scaling behavior of the spin pumping effect in ferromagnet/platinum bilayers
F. D. Czeschka, L. Dreher, M. S. Brandt +10
We systematically measured the DC voltage V_ISH induced by spin pumping together with the inverse spin Hall effect in ferromagnet/platinum bilayer films. In all our samples, compri…