Deterministic control of nanomagnetic spiral trajectories using an electric field

Samuel H. Moody (), Matthew T. Littlehales, Daniel A. Mayoh, Geetha Balakrishnan, Diego Alba Venero, Peter D. Hatton and Jonathan S. White ()
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Samuel H. Moody: Paul Scherrer Institut (PSI)
Matthew T. Littlehales: Durham University
Daniel A. Mayoh: University of Warwick
Geetha Balakrishnan: University of Warwick
Diego Alba Venero: Rutherford Appleton Laboratory
Peter D. Hatton: Durham University
Jonathan S. White: Paul Scherrer Institut (PSI)

Nature Communications, 2025, vol. 16, issue 1, 1-10

Abstract: Abstract The intertwined nature of magnetic and electric degrees of freedom in magnetoelectric (ME) materials is well described by ME-coupling theory. When an external electric field is applied to a ME material, the ME coupling induces unique and intriguing magnetic responses. Such responses underpin the utilisation of ME materials across diverse applications, ranging from electromagnetic sensing to low-energy digital memory technologies. Here, we use small angle neutron scattering and discover a novel magnetic response within an archetypal chiral ME material, Cu2OSeO3. We find that the propagation direction of an incommensurate magnetic spiral is deterministically actuated and deflected along controllable trajectories. Furthermore, we predict the emergence of distinct non-linear regimes of spiral-deflection behaviour with external electric and magnetic fields, unlocking innovative devices that leverage controlled and customisable variations in macroscopic polarisation and magnetisation.

Date: 2025
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DOI: 10.1038/s41467-025-60288-1

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