Real-space imaging of confined magnetic skyrmion tubes

DOI: 10.1038/s41467-020-15474-8

Authors: M. T. Birch (Durham University) , D. Cortés-Ortuño (University of Southampton) , L. A. Turnbull (Durham University) , M. N. Wilson (Durham University) , F. Groß (Max Planck Institute for Intelligent Systems) , N. Träger (Max Planck Institute for Intelligent Systems) , A. Laurenson (University of Exeter) , N. Bukin (University of Exeter) , S. H. Moody (Durham University) , M. Weigand (Max Planck Institute for Intelligent Systems; Helmholtz-Zentrum Berlin für Materialien und Energie GmbH) , G. Schütz (Max Planck Institute for Intelligent Systems) , H. Popescu (Synchrotron SOLEIL) , R. Fan (Diamond Light Source) , P. Steadman (Diamond Light Source) , J. A. T. Verezhak (University of Warwick) , G. Balakrishnan (University of Warwick) , J. C. Loudon (University of Cambridge) , A. C. Twitchett-Harrison (University of Cambridge) , O. Hovorka (University of Southampton) , H. Fangohr (University of Southampton) , F. Y. Ogrin (University of Exeter) , J. Gräfe (Max Planck Institute for Intelligent Systems) , P. D. Hatton (University of Durham)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Nature Communications , VOL 11

State: Published (Approved)
Published: April 2020
Diamond Proposal Number(s): 20866

Abstract: Magnetic skyrmions are topologically nontrivial particles with a potential application as information elements in future spintronic device architectures. While they are commonly portrayed as two dimensional objects, in reality magnetic skyrmions are thought to exist as elongated, tube-like objects extending through the thickness of the host material. The study of this skyrmion tube state (SkT) is vital for furthering the understanding of skyrmion formation and dynamics for future applications. However, direct experimental imaging of skyrmion tubes has yet to be reported. Here, we demonstrate the real-space observation of skyrmion tubes in a lamella of FeGe using resonant magnetic x-ray imaging and comparative micromagnetic simulations, confirming their extended structure. The formation of these structures at the edge of the sample highlights the importance of confinement and edge effects in the stabilisation of the SkT state, opening the door to further investigation into this unexplored dimension of the skyrmion spin texture.

Journal Keywords: Magnetic properties and materials; Topological defects

Diamond Keywords: Skyrmions; Ferromagnetism

Subject Areas: Materials, Physics


Instruments: I10-Beamline for Advanced Dichroism - scattering

Other Facilities: SOLEIL; BESSY II

Added On: 15/04/2020 15:04

Documents:
s41467-020-15474-8.pdf

Discipline Tags:

Quantum Materials Hard condensed matter - electronic properties Physics Magnetism Materials Science

Technical Tags:

Spectroscopy Circular Dichroism (CD) X-ray Magnetic Circular Dichroism (XMCD)