Large magneto-Seebeck effect in magnetic tunnel junctions with half-metallic Heusler electrodes

Böhnke A, Martens U, Sterwerf C, Niesen A, Huebner T, von der Ehe M, Meinert M, Kuschel T, Thomas A, Heiliger C, Münzenberg M, et al. (2017)
Nature Communications 8(1): 1626.

Download
Es wurde kein Volltext hochgeladen. Nur Publikationsnachweis!
Zeitschriftenaufsatz | Veröffentlicht | Englisch
Autor
; ; ; ; ; ; ; ; ; ; ;
Alle
Abstract / Bemerkung
Spin caloritronics studies the interplay between charge-, heat- and spin-currents, which are initiated by temperature gradients in magnetic nanostructures. A plethora of new phenomena has been discovered that promises, e.g., to make wasted heat in electronic devices useable or to provide new read-out mechanisms for information. However, only few materials have been studied so far with Seebeck voltages of only some microvolt, which hampers applications. Here, we demonstrate that half-metallic Heusler compounds are hot candidates for enhancing spin-dependent thermoelectric effects. This becomes evident when considering the asymmetry of the spin-split density of electronic states around the Fermi level that determines the spin-dependent thermoelectric transport in magnetic tunnel junctions. We identify Co2FeAl and Co2FeSi Heusler compounds as ideal due to their energy gaps in the minority density of states, and demonstrate devices with substantially larger Seebeck voltages and tunnel magneto-Seebeck effect ratios than the commonly used Co-Fe-B-based junctions.
Erscheinungsjahr
Zeitschriftentitel
Nature Communications
Band
8
Zeitschriftennummer
1
Artikelnummer
1626
ISSN
PUB-ID

Zitieren

Böhnke A, Martens U, Sterwerf C, et al. Large magneto-Seebeck effect in magnetic tunnel junctions with half-metallic Heusler electrodes. Nature Communications. 2017;8(1): 1626.
Böhnke, A., Martens, U., Sterwerf, C., Niesen, A., Huebner, T., von der Ehe, M., Meinert, M., et al. (2017). Large magneto-Seebeck effect in magnetic tunnel junctions with half-metallic Heusler electrodes. Nature Communications, 8(1), 1626. doi:10.1038/s41467-017-01784-x
Böhnke, A., Martens, U., Sterwerf, C., Niesen, A., Huebner, T., von der Ehe, M., Meinert, M., Kuschel, T., Thomas, A., Heiliger, C., et al. (2017). Large magneto-Seebeck effect in magnetic tunnel junctions with half-metallic Heusler electrodes. Nature Communications 8:1626.
Böhnke, A., et al., 2017. Large magneto-Seebeck effect in magnetic tunnel junctions with half-metallic Heusler electrodes. Nature Communications, 8(1): 1626.
A. Böhnke, et al., “Large magneto-Seebeck effect in magnetic tunnel junctions with half-metallic Heusler electrodes”, Nature Communications, vol. 8, 2017, : 1626.
Böhnke, A., Martens, U., Sterwerf, C., Niesen, A., Huebner, T., von der Ehe, M., Meinert, M., Kuschel, T., Thomas, A., Heiliger, C., Münzenberg, M., Reiss, G.: Large magneto-Seebeck effect in magnetic tunnel junctions with half-metallic Heusler electrodes. Nature Communications. 8, : 1626 (2017).
Böhnke, Alexander, Martens, Ulrike, Sterwerf, Christian, Niesen, Alessia, Huebner, Torsten, von der Ehe, Marvin, Meinert, Markus, Kuschel, Timo, Thomas, Andy, Heiliger, Christian, Münzenberg, Markus, and Reiss, Günter. “Large magneto-Seebeck effect in magnetic tunnel junctions with half-metallic Heusler electrodes”. Nature Communications 8.1 (2017): 1626.
Link(s) zu Volltext(en)
Access Level
Restricted Closed Access

Export

Markieren/ Markierung löschen
Markierte Publikationen

Open Data PUB

Web of Science

Dieser Datensatz im Web of Science®

Quellen

PMID: 29158514
PubMed | Europe PMC

Suchen in

Google Scholar