79 citations · 325 across the 9 of their papers we have counts for
9 papers
Large magneto-Seebeck effect in magnetic tunnel junctions with half-metallic Heusler electrodes
Alexander Boehnke, Ulrike Martens, Christian Sterwerf +9
Spin caloritronics studies the interplay between charge-, heat- and spin-currents, which are initiated by temperature gradients in magnetic nanostructures. A plethora of new phenom…
Enhancement of thermovoltage and tunnel magneto-Seebeck effect in CoFeB based magnetic tunnel junctions by variation of the MgAlO and MgO barrier thickness
Torsten Huebner, Ulrike Martens, Jakob Walowski +7
We investigate the influence of the barrier thickness of CoFeB based magnetic tunnel junctions on the laser-induced tunnel magneto-Seebeck effect. Varying the…
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…
Comparison of laser induced and intrinsic tunnel magneto-Seebeck effect in CoFeB/MgAlO and CoFeB/MgO magnetic tunnel junctions
Torsten Huebner, Alexander Boehnke, Ulrike Martens +5
We present a comparison of the tunnel magneto-Seebeck effect for laser induced and intrinsic heating. Therefore, CoFeB/MgAlO and CoFeB$_{…
Exchange bias effect in martensitic epitaxial Ni-Mn-Sn thin films applied to pin CoFeB/MgO/CoFeB magnetic tunnel junctions
Niclas Teichert, Alexander Boehnke, Anna Behler +3
The exchange bias effect is commonly used to shift the coercive field of a ferromagnet. This technique is crucial for the use of magnetic tunnel junctions as logic or memory device…
Structure and Giant Inverse Magnetocaloric Effect of Epitaxial Ni-Co-Mn-Al Films
Niclas Teichert, Daniel Kucza, Oguz Yildirim +10
The structural, magnetic, and magnetocaloric properties of epitaxial Ni-Co-Mn-Al thin films with different compositions have been studied. The films were deposited on MgO(001) subs…
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…
Physical characteristics and cation distribution of NiFe2O4 thin films with high resistivity prepared by reactive co-sputtering
Christoph Klewe, Markus Meinert, Alexander Boehnke +6
We fabricated NiFe2O thin films on MgAl2O4 (001) substrates by reactive dc magnetron co-sputtering in a pure oxygen atmosphere at different substrate temperatures. The film propert…
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…