%0 Journal Article
%A Gayles, Jacob
%A Freimuth, F.
%A Schena, Timo
%A Lani, G.
%A Mavropoulos, P.
%A Duine, R. A.
%A Blügel, S.
%A Sinova, J.
%A Mokrousov, Y.
%T Dzyaloshinskii-Moriya Interaction and Hall Effects in the Skyrmion Phase of Mn 1 − x Fe x Ge
%J Physical review letters
%V 115
%N 3
%@ 1079-7114
%C College Park, Md.
%I APS
%M FZJ-2015-04965
%P 036602
%D 2015
%X We carry out density functional theory calculations which demonstrate that the electron dynamics in the Skyrmion phase of Fe-rich Mn1−xFexGe alloys is governed by Berry phase physics. We observe that the magnitude of the Dzyaloshinskii-Moriya interaction directly related to the mixed space-momentum Berry phases, changes sign and magnitude with concentration x in direct correlation with the data of Shibata et al. [Nat. Nanotechnol. 8, 723 (2013)]. The computed anomalous and topological Hall effects in FeGe are also in good agreement with available experiments. We further develop a simple tight-binding model able to explain these findings. Finally, we show that the adiabatic Berry phase picture is violated in the Mn-rich limit of the alloys.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000357864800018
%R 10.1103/PhysRevLett.115.036602
%U https://juser.fz-juelich.de/record/202789