Spin dynamics in bulk MnNiGa and Mn1.4Pt0.9Pd0.1Sn investigated by muon spin relaxation [dataset]

Loudon, J.C. (University of Cambridge, UK); Balakrishnan, G. (University of Warwick, UK); Štefančič, A. (University of Warwick, UK); Lancaster, T. (Durham University, UK); Gomilšek, M. (Durham University, UK); Hicken, T.J. (Durham University, UK); Telling, M. (ISIS Pulsed Neutron and Muon Facility, UK); Wilson, M.N. (Durham University, UK); Twitchett-Harrison, A.C. (University of Cambridge, UK); Pratt, F.L. (ISIS Pulsed Neutron and Muon Facility, UK)

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Spin dynamics in bulk MnNiGa and Mn1.4Pt0.9Pd0.1Sn investigated by muon spin relaxation [dataset] Open Access

We report muon spin relaxation and magnetometry studies of bulk Mn1.4Pt0.9Pd0.1Sn and MnNiGa, two materials which have recently been proposed to host topological magnetic states in thin lamella (antiskyrmions for Mn1.4Pt0.9Pd0.1Sn and biskyrmions for MnNiGa), and show spin reorientation transitions in bulk. These measurements shed light on the magnetic dynamics surounding the two magnetic phase transitions in each material. In particular, we demonstrate that the behaviour approaching the higher temperature transition in both samples is best understood by considering a slow decrease in the frequency of dynamics with temperature, rather than the sharp critical slowing down typical of second order transitions. Furthermore, at low temperatures the two samples both show spin dynamics over a broad range of frequencies that persist below the spin reorienation transition. The dynamic behavior we identify gives new insight into the bulk magnetism of these materials that may help underpin the stabilization of the topologically non-trivial phases that are seen in thin lamellae.

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Resource type: Dataset
Contributors: Creator: Wilson, M.N. ¹
Contact person: Wilson, M.N. ¹
Data curator: Wilson, M.N. ¹
Creator: Hicken, T.J. ¹
Creator: Gomilšek, M. ¹
Creator: Štefančič, A. ²
Creator: Balakrishnan, G. ²
Creator: Loudon, J.C. ³
Creator: Twitchett-Harrison, A.C. ³
Creator: Pratt, F.L. ⁴
Creator: Telling, M. ⁴
Creator: Lancaster, T. ¹

¹ Durham University, UK
² University of Warwick, UK
³ University of Cambridge, UK
⁴ ISIS Pulsed Neutron and Muon Facility, UK
Funder: Engineering and Physical Sciences Research Council
Research methods
Other description
Keyword: Skyrmions
Muon spin relaxation
Magnetism
Subject
Location
Language
Cited in
Identifier: ark:/32150/r13j333226f
doi:10.15128/r13j333226f
Rights: Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA)
Publisher: Durham University
Date Created: 2020-11-24

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Depositor: M.N. Wilson
Date Uploaded: 24 November 2020, 22:11:50
Date Modified: 1 October 2021, 09:10:39
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Last modified: 2020:11:24 22:04:55+00:00

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