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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…
Terahertz spin currents and inverse spin Hall effect in thin-film heterostructures containing complex magnetic compounds
T. Seifert, U. Martens, S. Günther +20
Terahertz emission spectroscopy of ultrathin multilayers of magnetic and heavy metals has recently attracted much interest. This method not only provides fundamental insights into…
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…