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Magnetic phases of skyrmion-hosting GaV4S8−ySey (y=0,2,4,8) probed with muon spectroscopy
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Franke, Kévin J. A., Huddart, Benjamin M., Hicken, Thomas J., Xiao, Fan, Blundell, Stephen J., Pratt, Francis L., Crisanti, Marta, Barker, Joel A. T., Clark, Stewart J., Štefančič, Aleš, Ciomaga Hatnean, Monica, Balakrishnan, Geetha and Lancaster, Tom (2018) Magnetic phases of skyrmion-hosting GaV4S8−ySey (y=0,2,4,8) probed with muon spectroscopy. Physical Review B, 98 (5). 054428. doi:10.1103/PhysRevB.98.054428
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Official URL: http://dx.doi.org/10.1103/PhysRevB.98.054428
Abstract
We present the results of a muon-spin spectroscopy investigation of GaV4S8−ySey with y = 0, 2, 4, and 8. Zero-field measurements suggest that GaV4Se8 and GaV4S8 have distinct magnetic ground states, with the latter material showing an anomalous temperature dependence of the local magnetic field. It is not possible to evolve the magnetic state continuously between these two systems, with the intermediate y = 2 and 4 materials showing glassy magnetic behavior at low temperature. The skyrmion lattice (SkL) phase is evident in the y = 0 and 8 materials through an enhanced response of the muon-spin relaxation to the emergent dynamics that accompany the SkL. For our polycrystalline samples of GaV4Se8, this enhanced dynamic response is confined to a smaller region of the magnetic field-temperature phase diagram than the previous reports of the SkL in single crystals.
| Item Type: | Journal Article | |||||||||||||||
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| Subjects: | Q Science > QC Physics | |||||||||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||||||||
| Library of Congress Subject Headings (LCSH): | Skyrme model, Muon spin rotation | |||||||||||||||
| Journal or Publication Title: | Physical Review B | |||||||||||||||
| Publisher: | American Physical Society | |||||||||||||||
| ISSN: | 2469-9950 | |||||||||||||||
| Official Date: | 27 August 2018 | |||||||||||||||
| Dates: |
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| Volume: | 98 | |||||||||||||||
| Number: | 5 | |||||||||||||||
| Article Number: | 054428 | |||||||||||||||
| DOI: | 10.1103/PhysRevB.98.054428 | |||||||||||||||
| Status: | Peer Reviewed | |||||||||||||||
| Publication Status: | Published | |||||||||||||||
| Reuse Statement (publisher, data, author rights): | © 2018 American Physical Society | |||||||||||||||
| Access rights to Published version: | Restricted or Subscription Access | |||||||||||||||
| Copyright Holders: | American Physical Society | |||||||||||||||
| RIOXX Funder/Project Grant: |
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