Journal Article

FZJ-2021-00284

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Short period magnetization texture of B20-MnGe explained by thermally fluctuating local moments

Mendive-Tapia, E. (Corresponding author) ; dos Santos Dias, M.FZJ* ; Grytsiuk, S.FZJ* ; Staunton, J. B. ; Blügel, S.FZJ* ; Lounis, S.FZJ*

2021
Inst. Woodbury, NY

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Please use a persistent id in citations: http://hdl.handle.net/2128/26798  doi: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.

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (IAS-1)
2. Quanten-Theorie der Materialien (PGI-1)
3. JARA-FIT (JARA-FIT)
4. JARA - HPC (JARA-HPC)

Research Program(s):

1. 899 - ohne Topic (POF4-899) (POF4-899)
2. First-principles investigation of single magnetic nano-skyrmions (jias17_20190501) (jias17_20190501)

Appears in the scientific report 2021

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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