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Observation of room-temperature magnetic skyrmions and their current-driven dynamics in ultrathin metallic ferromagnets

Title
Observation of room-temperature magnetic skyrmions and their current-driven dynamics in ultrathin metallic ferromagnets
Authors
Woo, S[Woo, Seonghoon]Litzius, K[Litzius, Kai]Kruger, B[Krueger, Benjamin]Im, MY[Im, Mi-Young]Caretta, L[Caretta, Lucas]Richter, K[Richter, Kornel]Mann, M[Mann, Maxwell]Krone, A[Krone, Andrea]Reeve, RM[Reeve, Robert M.]Weigand, M[Weigand, Markus]Agrawal, P[Agrawal, Parnika]Lemesh, I[Lemesh, Ivan]Mawass, MA[Mawass, Mohamad-Assaad]Fischer, P[Fischer, Peter]Klaui, M[Klaeui, Mathias]Beach, GRSD[Beach, Geo Rey S. D.]
DGIST Authors
Im, MY[Im, Mi-Young]
Issue Date
2016-05
Citation
Nature Materials, 15(5), 501-+
Type
Article
Article Type
Article
Keywords
Energy EfficiencyExperimental EvidenceFerromagnetic MaterialsFerromagnetismMagnetic Levitation VehiclesMagnetic TransmissionsMagnetismMagnetoelectronicsMagnetsMetallic FerromagnetsMotion of IndividualSkyrmion LatticesSoft X-Ray MicroscopySpintronic DeviceTransition-Metal FerromagnetsTransition-Metalss
ISSN
1476-1122
Abstract
Magnetic skyrmions are topologically protected spin textures that exhibit fascinating physical behaviours and large potential in highly energy-efficient spintronic device applications. The main obstacles so far are that skyrmions have been observed in only a few exotic materials and at low temperatures, and fast current-driven motion of individual skyrmions has not yet been achieved. Here, we report the observation of stable magnetic skyrmions at room temperature in ultrathin transition metal ferromagnets with magnetic transmission soft X-ray microscopy. We demonstrate the ability to generate stable skyrmion lattices and drive trains of individual skyrmions by short current pulses along a magnetic racetrack at speeds exceeding 100 m s-1 as required for applications. Our findings provide experimental evidence of recent predictions and open the door to room-temperature skyrmion spintronics in robust thin-film heterostructures. © 2016 Macmillan Publishers Limited. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/2692
DOI
10.1038/NMAT4593
Publisher
Nature Publishing Group
Files:
There are no files associated with this item.
Collection:
Emerging Materials ScienceETC1. Journal Articles


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