Chiral surface twists and skyrmion stability in nanolayers of cubic helimagnets

Leonov, A. O. et al. (2016) Chiral surface twists and skyrmion stability in nanolayers of cubic helimagnets. Physical Review Letters, 117(8), 087202. (doi:10.1103/PhysRevLett.117.087202)

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Abstract

Theoretical analysis and Lorentz transmission electron microscopy (LTEM) investigations in an FeGe wedge demonstrate that chiral twists arising near the surfaces of noncentrosymmetric ferromagnets [Meynell et al., Phys. Rev. B 90, 014406 (2014)] provide a stabilization mechanism for magnetic Skyrmion lattices and helicoids in cubic helimagnet nanolayers. The magnetic phase diagram obtained for freestanding cubic helimagnet nanolayers shows that magnetization processes differ fundamentally from those in bulk cubic helimagnets and are characterized by the first-order transitions between modulated phases. LTEM investigations exhibit a series of hysteretic transformation processes among the modulated phases, which results in the formation of the multidomain patterns.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:McGrouther, Dr Damien and Togawa, Dr Yoshihiko and McVitie, Professor Stephen and LAMB, Raymond and Stamps, Professor Robert
Authors: Leonov, A. O., Togawa, Y., Monchesky, T.L., Bogdanov, A.N., Kishine, J., Kousaka, Y., Miyagawa, M., Koyama, T., Akimitsu, J., Koyama, T., Harada, K., Mori, S., McGrouther, D., Lamb, R., Krajnak, M., McVitie, S., Stamps, R.L., and Inoue, K.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review Letters
Publisher:American Physical Society
ISSN:0031-9007
ISSN (Online):1079-7114
Published Online:15 August 2016
Copyright Holders:Copyright © 2016 The Authors
First Published:First published in Physical Review Letters 117(8):087202
Publisher Policy:Reproduced under a Creative Commons License
Data DOI:/10.5525/gla.researchdata.328

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
683531Consortium for advanced materials based on spin chiralityRobert StampsEngineering & Physical Sciences Research Council (EPSRC)EP/M024423/1S&E P&A - PHYSICS & ASTRONOMY