Journal Article

FZJ-2015-04965

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Dzyaloshinskii-Moriya Interaction and Hall Effects in the Skyrmion Phase of Mn 1 − x Fe x Ge

Gayles, J. (Corresponding author) ; Freimuth, F.FZJ* ; Schena, T. ; Lani, G. ; Mavropoulos, P.FZJ* ; Duine, R.  A. ; Blügel, S.FZJ* ; Sinova, J. ; Mokrousov, Y.FZJ*

2015
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/9017  doi:10.1103/PhysRevLett.115.036602

Abstract: 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.

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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)

Research Program(s):

1. 142 - Controlling Spin-Based Phenomena (POF3-142) (POF3-142)
2. 143 - Controlling Configuration-Based Phenomena (POF3-143) (POF3-143)

Appears in the scientific report 2015

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Database coverage:
; ; Current Contents - Physical, Chemical and Earth Sciences ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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