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Field-orientation-dependent magnetic phases in GdRu2Si2 probed with muon-spin spectroscopy [dataset] Open Access

Centrosymmetric GdRu2Si2 exhibits a variety of multi-Q magnetic states as a function of temperature and applied magnetic field, including a square skyrmion-lattice phase. The material’s behavior is strongly dependent on the direction of the applied field, with different phase diagrams resulting for fields applied parallel or perpendicular to the crystallographic c axis. Here, we present the results of muon-spin relaxation (μ+SR) measurements on single crystals of GdRu2Si2. Our analysis is based on the computation of muon stopping sites and consideration of quantum zero-point motion effects of muons, allowing direct comparison with the underlying spin textures in the material. The muon site is confirmed experimentally, using angle-dependent measurements of the muon Knight shift. Using transverse-field μ+SR with fields applied along either the [001] or [100] crystallographic directions, we distinguish between the magnetic phases in this system via their distinct muon response, providing additional evidence for the skyrmion and meron-lattice phases, while also suggesting the existence of RKKY-driven muon hyperfine coupling. Zero-field μ+SR provides clear evidence for a transition between two distinct magnetically ordered phases at 39 K.

Descriptions

Resource type

Dataset

Contributors

Creator: Huddart, B.M. ¹
Creator: Hernández-Melián, A. ¹
Creator: Wood, G.D.A. ²
Creator: Mayoh, D.A. ²
Creator: Gomilšek, M. ³
Creator: Guguchia, Z. ⁴
Creator: Wang, C. ⁴
Creator: Hicken, T.J. ⁴
Creator: Blundell, S.J. ⁵
Creator: Balakrishnan, G. ²
Creator: Lancaster, T. ¹

¹ Durham University
² University of Warwick
³ Jožef Stefan Institut
⁴ Paul Scherrer Institute, Switzerland
⁵ University of Oxford

Funder

Engineering and Physical Sciences Research Council

Research methods

Other description

Keyword

Muon-spin relaxation

Subject

Muons--Spectra

Location

Language

Cited in

doi:10.1103/PhysRevB.111.054440

Identifier

ark:/32150/r15138jd91z
doi:10.15128/r15138jd91z

Rights

Creative Commons Attribution 4.0 International (CC BY)

Publisher

Durham University

Date Created

File Details

Depositor

T. Lancaster

Date Uploaded

6 February 2025, 09:02:44

Date Modified

26 March 2025, 10:03:36

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Characterization

File format: zip (ZIP Format)

Mime type: application/zip

File size: 22146258

Last modified: 2025:03:25 11:39:23+00:00

Filename: GdRu2Si2_muon_data.zip

Original checksum: 80670536caf59c61a5e2d5e4bb8bf301