Magnetism and Néel skyrmion dynamics in GaV4S8-ySey [dataset]

Hawkhead, Zachary (Durham University, UK); Stefancic, Ales (University of Warwick, UK); Gomilsek, Matjaz (Durham University, UK); Lees, Martin (University of Warwick, UK); Hicken, Thomas (Durham University, UK); Wilson, Murray (Durham University, UK); Clark, Stewart (Durham University, UK); Pratt, Francis (ISIS Pulsed Neutron and Muon Facility, UK); Lancaster, Tom (Durham University, UK); Balakrishnan, Geetha (University of Warwick, UK); Blundell, Stephen (Oxford University); Franke, Kévin (Durham University, UK); Huddart, Ben (Durham University, UK); Holt, Sam (University of Warwick, UK)

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Magnetism and Néel skyrmion dynamics in GaV4S8-ySey [dataset] Open Access

We present an investigation of the influence of low levels of chemical substitution on the magnetic ground state and Néel skyrmion lattice (SkL) state in GaV 4 S 8 − y Se y , where y = 0 , 0.1 , 7.9 , and 8. Muon-spin spectroscopy ( μ SR ) measurements on y = 0 and 0.1 materials reveal the magnetic ground state consists of microscopically coexisting incommensurate cycloidal and ferromagnetic environments, whereas chemical substitution leads to the growth of localized regions of increased spin density. μ SR measurements of emergent low-frequency skyrmion dynamics show that the SkL exists under low levels of substitution at both ends of the series. Skyrmionic excitations persist to temperatures below the equilibrium SkL in substituted samples, suggesting the presence of skyrmion precursors over a wide range of temperatures.

Descriptions

Resource type: Dataset
Contributors: Creator: Hicken, Thomas ¹
Creator: Lancaster, Tom ¹
Contact person: Lancaster, Tom ¹
Creator: Holt, Sam ²
Creator: Franke, Kévin ¹
Creator: Hawkhead, Zachary ¹
Creator: Stefancic, Ales ²
Creator: Wilson, Murray ¹
Creator: Gomilsek, Matjaz ¹
Creator: Huddart, Ben ¹
Creator: Clark, Stewart ¹
Creator: Lees, Martin ²
Creator: Pratt, Francis ³
Creator: Blundell, Stephen ⁴
Creator: Balakrishnan, Geetha ²

¹ Durham University, UK
² University of Warwick, UK
³ ISIS Pulsed Neutron and Muon Facility, UK
⁴ Oxford University
Funder: Engineering and Physical Sciences Research Council
Science and Technology Facilities Council
Paul Scherrer Institut
Research methods
Other description
Keyword: Magnetic order
Skyrmions
AC susceptibility measurements
Muon spin relaxation & rotation
Density functional theory
Subject
Location
Language: English
Cited in: doi:10.1103/PhysRevResearch.2.032001
Identifier: ark:/32150/r1b2773v71x
doi:10.15128/r1b2773v71x
Rights: Creative Commons Attribution 4.0 International (CC BY)
Publisher: Durham University
Date Created

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Depositor: T.J. Hicken
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User N. Syrotiuk has updated Magnetism and Néel skyrmion dynamics in GaV4S8-ySey [dataset]	over 4 years ago
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