Publikation: Enhanced Nonadiabaticity in Vortex Cores due to the Emergent Hall Effect
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We present a combined theoretical and experimental study, investigating the origin of the enhanced non-adiabaticity of magnetic vortex cores. Scanning transmission X-ray microscopy is used to image the vortex core gyration dynamically to measure the non-adiabaticity with high precision, including a high confidence upper bound. Using both numerical computations and analytical derivations, we show that the large non-adiabaticity parameter observed experimentally can be explained by the presence of local spin currents arising from a texture-induced emergent Hall effect. This enhanced non-adiabaticity is only present in two- and three-dimensional magnetic textures such as vortices and skyrmions and absent in one-dimensional domain walls, in agreement with experimental observations.
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BISIG, André, Collins Ashu AKOSA, Jung-Hwan MOON, Jan RHENSIUS, Christoforos MOUTAFIS, Arndt VON BIEREN, Jakoba HEIDLER, Gillian KILIANI, Matthias KAMMERER, Mathias KLÄUI, 2016. Enhanced Nonadiabaticity in Vortex Cores due to the Emergent Hall Effect. In: Physical Review Letters. 2016, 117(27), 277203. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.117.277203BibTex
@article{Bisig2016Enhan-37881,
year={2016},
doi={10.1103/PhysRevLett.117.277203},
title={Enhanced Nonadiabaticity in Vortex Cores due to the Emergent Hall Effect},
number={27},
volume={117},
issn={0031-9007},
journal={Physical Review Letters},
author={Bisig, André and Akosa, Collins Ashu and Moon, Jung-Hwan and Rhensius, Jan and Moutafis, Christoforos and von Bieren, Arndt and Heidler, Jakoba and Kiliani, Gillian and Kammerer, Matthias and Kläui, Mathias},
note={Article Number: 277203}
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