%0 journal article
%@ 2469-9950
%A Altynbaev, E., Martin, N., Heinemann, A., Fomicheva, L., Tsvyashchenko, A., Mirebeau, I., Grigoriev, S.

%D 2020
%J Physical Review B
%N 10
%P 100404 
%R doi:10.1103/PhysRevB.101.100404
%T Onset of a skyrmion phase by chemical substitution in MnGe-based chiral magnets
%U https://doi.org/10.1103/PhysRevB.101.100404
10 
%X We study the evolution of the magnetic phase diagram of Mn1−xFexGe alloys with concentration x(0≤x≤0.3) by small-angle neutron scattering. We unambiguously observe the absence of a skyrmion (Sk) lattice (or A phase) in bulk MnGe and its onset under a small Mn/Fe substitution. The A phase is there endowed with extremely small Sks, potentially resulting in a high density, and is stabilized within a very large temperature region and a field range which scales with the Fe concentration. Our findings highlight the possibility to fine tune the properties of skyrmion lattices by means of chemical doping.