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Tilted X-Ray holography of magnetic bubbles in MnNiGa lamellae
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Turnbull, Luke A., Birch, Max T., Laurenson, Angus, Bukin, Nick, Burgos-Parra, Erick O., Popescu, Horia, Wilson, Murray N., Štefančič, Aleš, Balakrishnan, Geetha, Ogrin, Feodor Y. and Hatton, Peter D. (2020) Tilted X-Ray holography of magnetic bubbles in MnNiGa lamellae. ACS Nano, 15 (1). pp. 387-395. doi:10.1021/acsnano.0c07392
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Official URL: http://dx.doi.org/10.1021/acsnano.0c07392
Abstract
Nanoscopic lamellae of centrosymmetric ferromagnetic alloys have recently been reported to host the biskyrmion spin texture, however this has been disputed as the misidentification of topologically trivial type-II magnetic bubbles. Here we demonstrate resonant soft x-ray holographic imaging of topological magnetic states in lamellae of the centrosymmetric alloy (Mn1-xNix)0:65Ga0:35 (x = 0:5), showing the presence of magnetic stripes evolving into single core magnetic bubbles. We observe rotation of the stripe phase via the nucleation and destruction of disclination defects. This indicates the system behaves as a conventional uniaxial ferromagnet. By utilizing the holography with extended reference by autocorrelation linear differential operator (HERALDO) method, we show tilted holographic images at 30 degrees incidence confirming the presence of type-II magnetic bubbles in this system. This study demonstrates the utility of x-ray imaging techniques in identifying the topology of localized structures in nanoscale magnetism.
| Item Type: | Journal Article | |||||||||
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| Subjects: | Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General) |
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| Divisions: | Faculty of Science > Physics | |||||||||
| Library of Congress Subject Headings (LCSH): | X-ray holography , Skyrme model, Topology, Chirality | |||||||||
| Journal or Publication Title: | ACS Nano | |||||||||
| Publisher: | American Chemical Society | |||||||||
| ISSN: | 1936-0851 | |||||||||
| Official Date: | 29 October 2020 | |||||||||
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| Volume: | 15 | |||||||||
| Number: | 1 | |||||||||
| Page Range: | pp. 387-395 | |||||||||
| DOI: | 10.1021/acsnano.0c07392 | |||||||||
| Status: | Peer Reviewed | |||||||||
| Publication Status: | Published | |||||||||
| Access rights to Published version: | Open Access | |||||||||
| Copyright Holders: | American Chemical Society | |||||||||
| RIOXX Funder/Project Grant: |
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| Open Access Version: |
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