The Library
Measuring the formation energy barrier of skyrmions in zinc-substituted Cu2OSeO3
Tools
Wilson, M. N., Crisanti, M., Barker, C., Štefančič, A., White, J. S., Birch, M. T., Balakrishnan, Geetha, Cubitt, R. and Hatton, P. D. (2019) Measuring the formation energy barrier of skyrmions in zinc-substituted Cu2OSeO3. Physical Review B (Condensed Matter and Materials Physics), 99 (17). 174421. doi:10.1103/PhysRevB.99.174421 ISSN 1098-0121.
|
PDF
WRAP-measuring-formation-energy-barrier-skyrmions-zinc-substituted-Cu2OSeO3-Balakrishnan-2019.pdf - Published Version - Requires a PDF viewer. Download (2771Kb) | Preview |
Official URL: http://dx.doi.org/10.1103/PhysRevB.99.174421
Abstract
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.
Item Type: | Journal Article | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Subjects: | Q Science > QC Physics | ||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||
Library of Congress Subject Headings (LCSH): | Skyrme model, Neutrons -- Scattering | ||||||||||||
Journal or Publication Title: | Physical Review B (Condensed Matter and Materials Physics) | ||||||||||||
Publisher: | American Physical Society | ||||||||||||
ISSN: | 1098-0121 | ||||||||||||
Official Date: | 22 May 2019 | ||||||||||||
Dates: |
|
||||||||||||
Volume: | 99 | ||||||||||||
Number: | 17 | ||||||||||||
Article Number: | 174421 | ||||||||||||
DOI: | 10.1103/PhysRevB.99.174421 | ||||||||||||
Status: | Peer Reviewed | ||||||||||||
Publication Status: | Published | ||||||||||||
Reuse Statement (publisher, data, author rights): | © 2019 American Physical Society | ||||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||||
Date of first compliant deposit: | 24 May 2019 | ||||||||||||
Date of first compliant Open Access: | 29 May 2019 | ||||||||||||
RIOXX Funder/Project Grant: |
|
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year