Aufgrund von Vorbereitungen auf eine neue Version von KOPS, können kommenden Montag und Dienstag keine Publikationen eingereicht werden. (Due to preparations for a new version of KOPS, no publications can be submitted next Monday and Tuesday.)
Type of Publication: | Journal article |
URI (citable link): | http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-74008 |
Author: | Heyne, Lutz; Kläui, Mathias; Backes, Dirk; Möhrke, Philipp; Moore, Thomas Arthur; Kimling, Johannes G.; Boulle, Olivier; Rüdiger, Ulrich; Heyderman, Laura J.; Fraile Rodríguez, Arantxa; Nolting, Frithjof; Kirsch, Konstantin; Mattheis, Roland |
Year of publication: | 2008 |
Published in: | Journal of Applied Physics ; 103 (2008). - 07D928 |
DOI (citable link): | https://dx.doi.org/10.1063/1.2836326 |
Summary: |
By direct x-ray photoemission electron microscopy imaging, we probe current-induced domain wall motion in 20 nm thick CoFeB wires. We observe transverse walls for all wire widths up to 1500 nm as a consequence of the small saturation magnetization of the material. High critical current densities above 1x10 12 A/m2 for wall displacement due to the spin transfer torque effect are found. The critical current densities jc increase further with decreasing wire width indicating that jc is governed by extrinsic pinning due to edge defects. In addition to wall displacements, we observe wall transformations to energetically favorable wall types due to heating. Owing to the high Curie temperature though, the sample temperature stays below the Curie temperature even for the highest current densities where structural damage sets in.
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Subject (DDC): | 530 Physics |
Link to License: | Attribution-ShareAlike 2.0 Generic |
Bibliography of Konstanz: | Yes |
HEYNE, Lutz, Mathias KLÄUI, Dirk BACKES, Philipp MÖHRKE, Thomas Arthur MOORE, Johannes G. KIMLING, Olivier BOULLE, Ulrich RÜDIGER, Laura J. HEYDERMAN, Arantxa FRAILE RODRÍGUEZ, Frithjof NOLTING, Konstantin KIRSCH, Roland MATTHEIS, 2008. Direct imaging of current-induced domain wall motion in CoFeB structures. In: Journal of Applied Physics. 103, 07D928. Available under: doi: 10.1063/1.2836326
@article{Heyne2008Direc-4915, title={Direct imaging of current-induced domain wall motion in CoFeB structures}, year={2008}, doi={10.1063/1.2836326}, volume={103}, journal={Journal of Applied Physics}, author={Heyne, Lutz and Kläui, Mathias and Backes, Dirk and Möhrke, Philipp and Moore, Thomas Arthur and Kimling, Johannes G. and Boulle, Olivier and Rüdiger, Ulrich and Heyderman, Laura J. and Fraile Rodríguez, Arantxa and Nolting, Frithjof and Kirsch, Konstantin and Mattheis, Roland}, note={Article Number: 07D928} }
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