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Authors: Sapozhnik, Alexey
Filianina, Mariia
Bodnar, Stanislav
Lamirand, A.
Mawass, Mohamad
Skourski, Y.
Elmers, Hans-Joachim
Zabel, Hartmut
Kläui, Mathias
Jourdan, Martin
Title: Direct imaging of antiferromagnetic domains in Mn2Au manipulated by high magnetic fields
Online publication date: 26-Aug-2019
Language: english
Abstract: In the field of antiferromagnetic (AFM) spintronics, information about the Neel vector, AFM domain sizes, and spin-flop fields is a prerequisite for device applications but is not available easily. We have investigated AFM domains and spin-flop-induced changes of domain patterns in Mn2Au(001) epitaxial thin films by x-ray magnetic linear dichroism photoemission electron microscopy (PEEM) using magnetic fields up to 70 T. As-prepared Mn2Au films exhibit AFM domains with an average size <= 1 mu m. Application of a 30 T field, exceeding the spin-flop field, along a magnetocrystalline easy axis dramatically increases the AFM domain size with Neel vectors perpendicular to the applied field direction. The width of Neel-type domain walls (DW) is below the spatial resolution of the PEEM and therefore can only be estimated from an analysis of the DW profile to be smaller than 80 nm. Furthermore, using the values for the DW width and the spin-flop field, we evaluate an in-plane anisotropy constant ranging between 1 and 17 eV/f.u..
DDC: 530 Physik
530 Physics
Institution: Johannes Gutenberg-Universität Mainz
Department: FB 08 Physik, Mathematik u. Informatik
Place: Mainz
URN: urn:nbn:de:hebis:77-publ-592132
Version: Accepted version
Publication type: Zeitschriftenaufsatz
License: in Copyright
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Journal: Physical review : B
Pages or article number: Art. 134429
Publisher: APS
Publisher place: College Park, Md.
Issue date: 2018
ISSN: 2469-9969
Publisher URL:
Publisher DOI: 10.1103/PhysRevB.97.134429
Appears in collections:JGU-Publikationen

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