Journal Article

FZJ-2019-03892

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Mixed topological semimetals driven by orbital complexity in two-dimensional ferromagnets

Niu, C. (Corresponding author)FZJ* ; Hanke, J.-P.FZJ* ; Buhl, P. M.FZJ* ; Zhang, H. ; Plucinski, L.FZJ* ; Wortmann, D.FZJ* ; Blügel, S.FZJ* ; Bihlmayer, G.FZJ* ; Mokrousov, Y.FZJ*

2019
Nature Publishing Group UK [London]

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Please use a persistent id in citations: http://hdl.handle.net/2128/22509  doi:10.1038/s41467-019-10930-6

Abstract: The concepts of Weyl fermions and topological semimetals emerging in three-dimensional momentum space are extensively explored owing to the vast variety of exotic properties that they give rise to. On the other hand, very little is known about semimetallic states emerging in two-dimensional magnetic materials, which present the foundation for both present and future information technology. Here, we demonstrate that including the magnetization direction into the topological analysis allows for a natural classification of topological semimetallic states that manifest in two-dimensional ferromagnets as a result of the interplay between spin-orbit and exchange interactions. We explore the emergence and stability of such mixed topological semimetals in realistic materials, and point out the perspectives of mixed topological states for current-induced orbital magnetism and current-induced domain wall motion. Our findings pave the way to understanding, engineering and utilizing topological semimetallic states in two-dimensional spin-orbit ferromagnets.

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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)
4. JARA - HPC (JARA-HPC)
5. Elektronische Eigenschaften (PGI-6)

Research Program(s):

1. 142 - Controlling Spin-Based Phenomena (POF3-142) (POF3-142)
2. 143 - Controlling Configuration-Based Phenomena (POF3-143) (POF3-143)
3. Magnetic Anisotropy of Metallic Layered Systems and Nanostructures (jiff13_20131101) (jiff13_20131101)
4. Topological transport in real materials from ab initio (jiff40_20090701) (jiff40_20090701)

Appears in the scientific report 2019

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