Measuring the Formation Energy Barrier of Skyrmions in Zinc Substituted Cu2OSeO3 [dataset]

White, Jonathan S. (Paul Scherrer Institut, Switzerland); Wilson, Murray N. (Durham University, UK); Balakrishnan, Geetha (University of Warwick, UK); Crisanti, Marta (Institut Laue-Langevin, France); Barker, Christopher (Durham University, UK); Štefančič, Aleš (University of Warwick, UK); Cubitt, Robert (Insitut Laue-Langevin, France); Hatton, Peter D. (Durham University, UK); Birch, Max T. (Durham University, UK)

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Measuring the Formation Energy Barrier of Skyrmions in Zinc Substituted Cu2OSeO3 [dataset] Open Access

We report small angle neutron scattering (SANS) measurements of the skyrmion lattice in (Cu0.976Zn0.024)2OSeO3 under the application of electric and magnetic fields. These measurements show an expansion of the skyrmion lattice stability region with electric field. Furthermore, using time-resolved SANS, we observe the slow formation of skyrmions after an electric or magnetic field is applied, which has not been observed in pristine Cu2OSeO3 crystals. The measured formation times are dramatically longer than the corresponding skyrmion annihilation times after the external field is removed, and increase exponentially from 100 s at 52.5 K to 10,000 s at 51.5 K. This thermally activated behavior indicates an energy barrier for skyrmion formation of 1.57(2) eV, the size of which demonstrates the huge cost for creating these complex chiral objects.

Descriptions

Resource type: Dataset
Contributors: Creator: Wilson, Murray N. ¹
Contact person: Wilson, Murray N. ¹
Creator: Crisanti, Marta ²
Creator: Barker, Christopher ¹
Creator: Štefančič, Aleš ³
Creator: White, Jonathan S. ⁴
Creator: Birch, Max T. ¹
Creator: Balakrishnan, Geetha ³
Creator: Cubitt, Robert ⁵
Creator: Hatton, Peter D. ¹

¹ Durham University, UK
² Institut Laue-Langevin, France
³ University of Warwick, UK
⁴ Paul Scherrer Institut, Switzerland
⁵ Insitut Laue-Langevin, France
Funder: Engineering and Physical Sciences Research Council
Research methods
Other description
Keyword: Skyrmion
Cu2OSeO3
Neutron
SANS
Subject: Skyrmion
Location
Language
Cited in
Identifier: ark:/32150/r26395w7101
doi:10.15128/r26395w7101
Rights: Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA)
Publisher: Durham University
Date Created: 17/05/2019

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Depositor: M.N. Wilson
Date Uploaded: 17 May 2019, 12:05:33
Date Modified: 30 January 2020, 16:01:58
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