Cited 38 time in webofscience Cited 36 time in scopus

Current-induced skyrmion generation through morphological thermal transitions in chiral ferromagnetic heterostructures

Title
Current-induced skyrmion generation through morphological thermal transitions in chiral ferromagnetic heterostructures
Authors
Lemesh, IvanLitzius, KaiBöttcher, MarieBassirian, PedramKerber, NicoHeinze, DanielZázvorka, JakubBüttner, FelixCaretta, LucasMann, MaxwellWeigand, MarkusFinizio, SimoneRaabe, JörgIm, Mi‐YoungStoll, HermannSchütz, GiselaDupé, BertrandKläui, MathiasBeach,Geoffrey S. D.
Issue Date
2018-12
Citation
Advanced Materials, 30(49), 1805461
Type
Article
Article Type
Article
ISSN
0935-9648
Abstract
Magnetic skyrmions promise breakthroughs in future memory and computing devices due to their inherent stability and small size. Their creation and current driven motion have been recently observed at room temperature, but the key mechanisms of their formation are not yet well-understood. Here it is shown that in heavy metal/ferromagnet heterostructures, pulsed currents can drive morphological transitions between labyrinth-like, stripe-like, and skyrmionic states. Using high-resolution X-ray microscopy, the spin texture evolution with temperature and magnetic field is imaged and it is demonstrated that with transient Joule heating, topological charges can be injected into the system, driving it across the stripe-skyrmion boundary. The observations are explained through atomistic spin dynamic and micromagnetic simulations that reveal a crossover to a global skyrmionic ground state above a threshold magnetic field, which is found to decrease with increasing temperature. It is demonstrated how by tuning the phase stability, one can reliably generate skyrmions by short current pulses and stabilize them at zero field, providing new means to create and manipulate spin textures in engineered chiral ferromagnets. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
URI
http://hdl.handle.net/20.500.11750/9550
DOI
10.1002/adma.201805461
Publisher
Wiley-VCH Verlag
Files:
There are no files associated with this item.
Collection:
ETC1. Journal Articles


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