Autoren:	Grigorev, Vladimir Filianina, Mariia Bodnar, Stanislav Yu. Sobolev, Sergei Bhattacharjee, Nilabha Bommanaboyena, Satya Lytvynenko, Yaryna Skourski, Yurii Fuchs, Dirk Kläui, Mathias Jourdan, Martin Demsar, Jure
Titel:	Optical readout of the Néel vector in the metallic antiferromagnet Mn2 Au
Online-Publikationsdatum:	1-Okt-2021
Erscheinungsdatum:	2021
Sprache des Dokuments:	Englisch
Zusammenfassung/Abstract:	Metallic antiferromagnets with broken inversion symmetry on the two sublattices, strong spin-orbit coupling, and high Neel temperatures offer alternative opportunities for applications in spintronics. Especially Mn2Au, with a high Neel temperature and high conductivity, is particularly interesting for real-world applications. Here, manipulation of the orientation of the staggered magnetization, (i.e., the Neel vector) by current pulses was recently demonstrated, with the readout limited to studies of anisotropic magnetoresistance or x-ray magnetic linear dichroism. Here we report on the in-plane reflectivity anisotropy of Mn2Au(001) films, which are Neel vector aligned in pulsed magnetic fields. In the near-infrared region, the anisotropy is approximately 0.6%, with higher reflectivity for the light polarized along the Neel vector. The observed magnetic linear dichroism is about 4 times larger than the anisotropic magnetoresistance. This suggests the dichroism in Mn2Au is a result of the strong spin-orbit interactions giving rise to anisotropy of interband optical transitions, which is in line with recent studies of electronic band structure. The considerable magnetic linear dichroism in the near-infrared region could be used for ultrafast optical readout of the Neel vector in Mn2Au.
DDC-Sachgruppe:	530 Physik 530 Physics
Veröffentlichende Institution:	Johannes Gutenberg-Universität Mainz
Organisationseinheit:	FB 08 Physik, Mathematik u. Informatik
Veröffentlichungsort:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-6305
Version:	Accepted version
Publikationstyp:	Zeitschriftenaufsatz
Weitere Angaben zur Dokumentart:	Scientific article
Nutzungsrechte:	Urheberrechtsschutz
Informationen zu den Nutzungsrechten:	http://rightsstatements.org/vocab/InC/1.0/
Zeitschrift:	Physical review applied 16 1
Seitenzahl oder Artikelnummer:	014037
Verlag:	American Physical Society
Verlagsort:	College Park, Md.
Erscheinungsdatum:	2021
ISSN:	2331-7019
URL der Originalveröffentlichung:	https://doi.org/10.1103/PhysRevApplied.16.014037
DOI der Originalveröffentlichung:	10.1103/PhysRevApplied.16.014037
Enthalten in den Sammlungen:	JGU-Publikationen