%0 Journal Article
%A Mendive-Tapia, Eduardo
%A dos Santos Dias, Manuel
%A Grytsiuk, Sergii
%A Staunton, Julie B.
%A Blügel, Stefan
%A Lounis, Samir
%T Short period magnetization texture of B20-MnGe explained by thermally fluctuating local moments
%J Physical review / B
%V 103
%N 2
%@ 2469-9950
%C Woodbury, NY
%I Inst.
%M FZJ-2021-00284
%P 024410
%D 2021
%X 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000606722500001
%R 10.1103/PhysRevB.103.024410
%U https://juser.fz-juelich.de/record/889652