Imaging non-collinear antiferromagnetic textures via single spin relaxometry.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
03 Feb 2021
03 Feb 2021
Historique:
received:
31
07
2020
accepted:
04
01
2021
entrez:
4
2
2021
pubmed:
5
2
2021
medline:
5
2
2021
Statut:
epublish
Résumé
Antiferromagnetic materials are promising platforms for next-generation spintronics owing to their fast dynamics and high robustness against parasitic magnetic fields. However, nanoscale imaging of the magnetic order in such materials with zero net magnetization remains a major experimental challenge. Here we show that non-collinear antiferromagnetic spin textures can be imaged by probing the magnetic noise they locally produce via thermal populations of magnons. To this end, we perform nanoscale, all-optical relaxometry with a scanning quantum sensor based on a single nitrogen-vacancy (NV) defect in diamond. Magnetic noise is detected through an increase of the spin relaxation rate of the NV defect, which results in an overall reduction of its photoluminescence signal under continuous laser illumination. As a proof-of-concept, the efficiency of the method is demonstrated by imaging various spin textures in synthetic antiferromagnets, including domain walls, spin spirals and antiferromagnetic skyrmions. This imaging procedure could be extended to a large class of intrinsic antiferromagnets and opens up new opportunities for studying the physics of localized spin wave modes for magnonics.
Identifiants
pubmed: 33536440
doi: 10.1038/s41467-021-20995-x
pii: 10.1038/s41467-021-20995-x
pmc: PMC7859235
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
767Subventions
Organisme : EC | EC Seventh Framework Programm | FP7 Ideas: European Research Council (FP7-IDEAS-ERC - Specific Programme: "Ideas" Implementing the Seventh Framework Programme of the European Community for Research, Technological Development and Demonstration Activities (2007 to 2013))
ID : 866267
Organisme : United States Department of Defense | Defense Advanced Research Projects Agency (DARPA)
ID : TEE programm
Organisme : Agence Nationale de la Recherche (French National Research Agency)
ID : ANR-17-CE24-0025
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