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Investigating the magnetic ground state of the skyrmion host material Cu2OSeO3 using long-wavelength neutron diffraction.

Franke, K. J. A. and Dean, P. R. and Hatnean, M. Ciomaga and Birch, M. T. and Khalyavin, D. D. and Manuel, P. and Lancaster, T. and Balakrishnan, G. and Hatton, P. D. (2019) 'Investigating the magnetic ground state of the skyrmion host material Cu2OSeO3 using long-wavelength neutron diffraction.', AIP Advances, 9 (12). p. 125228.

Abstract

We present long-wavelength neutron diffraction data measured on both single crystal and polycrystalline samples of the skyrmion host material Cu2OSeO3. We observe magnetic satellites around the (01⎯⎯1) diffraction peak not accessible to other techniques, and distinguish helical from conical spin textures in reciprocal space. Our measurements show that not only the field-polarised phase but also the helical ground state are made up of ferrimagnetic clusters instead of individual spins. These clusters are distorted Cu tetrahedra, where the spin on one Cu ion is anti-aligned with the spin on the three other Cu ions.

Item Type:Article
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Available under License - Creative Commons Attribution.
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Full text:Publisher-imposed embargo
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1063/1.5129400
Publisher statement:© Author(s) 2019. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Date accepted:18 November 2019
Date deposited:08 January 2020
Date of first online publication:23 December 2019
Date first made open access:08 January 2020

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