Journal Article

FZJ-2017-06080

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Antiskyrmions stabilized at interfaces by anisotropic Dzyaloshinskii-Moriya interactions

Hoffmann, M. (Corresponding author)FZJ* ; Zimmermann, B.FZJ* ; Müller, G. P.FZJ* ; Schürhoff, D. ; Kiselev, N. S.FZJ* ; Melcher, C. ; Blügel, S.FZJ*

2017
Nature Publishing Group London

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Please use a persistent id in citations: http://hdl.handle.net/2128/15160  doi:10.1038/s41467-017-00313-0

Abstract: Chiral magnets are an emerging class of topological matter harboring localized and topologically protected vortex-like magnetic textures called skyrmions, which are currently under intense scrutiny as an entity for information storage and processing. Here, on the level of micromagnetics we rigorously show that chiral magnets can not only host skyrmions but also antiskyrmions as least energy configurations over all non-trivial homotopy classes. We derive practical criteria for their occurrence and coexistence with skyrmions that can be fulfilled by (110)-oriented interfaces depending on the electronic structure. Relating the electronic structure to an atomistic spin-lattice model by means of density functional calculations and minimizing the energy on a mesoscopic scale by applying spin-relaxation methods, we propose a double layer of Fe grown on a W(110) substrate as a practical example. We conjecture that ultra-thin magnetic films grown on semiconductor or heavy metal substrates with C$_{2v}$ symmetry are prototype classes of materials hosting magnetic antiskyrmions.

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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)

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 Skyrmions from first-principles (jara0161_20161101) (jara0161_20161101)

Appears in the scientific report 2017

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