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Short period magnetization texture of B20-MnGe explained by thermally fluctuating local moments
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Mendive-Tapia, Eduardo, dos Santos Dias, Manuel, Grytsiuk, Sergii, Staunton, Julie B., Blügel, Stefan and Lounis, Samir (2021) Short period magnetization texture of B20-MnGe explained by thermally fluctuating local moments. Physical Review B (Condensed Matter and Materials Physics), 103 (2). 024410. doi:10.1103/PhysRevB.103.024410 ISSN 1098-0121.
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Official URL: http://dx.doi.org/10.1103/PhysRevB.103.024410
Abstract
B20-type compounds, such as MnSi and FeGe, host helimagnetic and skyrmion phases at the mesoscale, which are canonically explained by the combination of ferromagnetic isotropic interactions with weaker chiral Dzyaloshinskii-Moriya ones. Mysteriously, MnGe evades this paradigm as it displays a noncollinear magnetic state at a much shorter nanometer scale. Here we show that the length scale and volume-dependent magnetic properties of MnGe stem from purely isotropic exchange interactions, generally obtained in the paramagnetic state. Our approach is validated by comparing MnGe with the canonical B20-helimagnet FeGe. The free energy of MnGe is calculated, from which we show how triple-q magnetic states can stabilize by adding higher-order interactions.
Item Type: | Journal Article | |||||||||||||||||||||
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Subjects: | Q Science > QC Physics | |||||||||||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Ferromagnetic materials, Magnetic materials, Skyrme model, Magnetism | |||||||||||||||||||||
Journal or Publication Title: | Physical Review B (Condensed Matter and Materials Physics) | |||||||||||||||||||||
Publisher: | American Physical Society | |||||||||||||||||||||
ISSN: | 1098-0121 | |||||||||||||||||||||
Official Date: | 11 January 2021 | |||||||||||||||||||||
Dates: |
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Volume: | 103 | |||||||||||||||||||||
Number: | 2 | |||||||||||||||||||||
Article Number: | 024410 | |||||||||||||||||||||
DOI: | 10.1103/PhysRevB.103.024410 | |||||||||||||||||||||
Status: | Peer Reviewed | |||||||||||||||||||||
Publication Status: | Published | |||||||||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||||||||
Date of first compliant deposit: | 16 February 2022 | |||||||||||||||||||||
Date of first compliant Open Access: | 21 February 2022 | |||||||||||||||||||||
RIOXX Funder/Project Grant: |
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