Complex magnetism of B20-MnGe: from spin-spirals, hedgehogs to monopoles
Materials Science
2019-09-17 v2 Mesoscale and Nanoscale Physics
Abstract
B20 compounds are the playground for various non-trivial magnetic textures such as skyrmions, which are topologically protected states. Recent measurements on B20-MnGe indicate no clear consensus on its magnetic behavior, which is characterized by the presence of either spin-spirals or 3-dimensional objects interpreted to be a cubic lattice of hedgehogs and anti-hedgehogs. Utilizing a massively parallel linear scaling all-electron density functional algorithm, we find from full first-principles simulations on cells containing thousands of atoms that upon increase of the compound volume, the state with lowest energy switches across different magnetic phases: ferromagnetic, spin-spiral, hedgehog and monopole.
Keywords
Cite
@article{arxiv.1904.12176,
title = {Complex magnetism of B20-MnGe: from spin-spirals, hedgehogs to monopoles},
author = {Marcel Bornemann and Sergii Grytsiuk and Paul F. Baumeister and Manuel dos Santos Dias and Rudolf Zeller and Samir Lounis and Stefan Blügel},
journal= {arXiv preprint arXiv:1904.12176},
year = {2019}
}