Increased Lifetime of Metastable Skyrmions by Controlled Doping [dataset]

Birch, Thomas, Max (Durham University); Hatton, Peter (Durham University)

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Increased Lifetime of Metastable Skyrmions by Controlled Doping [dataset] Open Access

Previous observations of metastable magnetic skyrmions have shown that close to the equilibrium pocket the metastable state has a short lifetime, and therefore rapid cooling is required to generate a signi cant skyrmion population at low temperatures. Here, we report that the lifetime of metastable skyrmions in crystals of Cu2OSeO3 is extended by a factor of 50 with the introduction of only 2.5% zinc doping, allowing over 50% of the population to survive when eld-cooling at a rate of just 1 K/min. Our systematic study suggests that the lifetime enhancement is due to the increase in the pinning site density, rather than an alteration to the energy barrier of the decay process. We expect that doping can be exploited to control the lifetime of the metastable SkL state in other chiral magnets, o ering a method of engineering skyrmion materials towards application in future devices.

Descriptions

Resource type: Dataset
Contributors: Creator: Birch, Thomas, Max ¹
Contact person: Hatton, Peter ¹

¹ Durham University
Funder: Durham University
Engineering and Physical Sciences Research Council
Japan Society for the Promotion of Science
Diamond Light Source
Research methods: Magnetometry, Small Angle Neutron Scattering, Magnetic Resonance
Other description
Keyword: Skyrmion
Magnetism
Subject: Physics
Location
Language: English
Cited in
Identifier: ark:/32150/r12514nk51w
doi:10.15128/r12514nk51w
Rights: Creative Commons Attribution 4.0 International (CC BY)
Publisher: Durham University
Date Created

File Details

Depositor: T.M. Birch
Date Uploaded: 9 July 2019, 09:07:24
Date Modified: 9 July 2019, 15:07:09
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Characterization: File format: zip (ZIP Format)

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File size: 100058542

Last modified: 2019:07:09 12:47:09+01:00

Filename: Data_Lifetime_Paper.zip

Original checksum: 135345f9d9315a322ba3fe38be8baf28

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