Altermagnetic variants in thin films of Mn5Si3

Abstract

The altermagnet candidate Mn5Si3 has attracted wide attention in the context of non-relativistic spin physics, due to its composition of light elements. However, the presumed structure of the altermagnetic phase had yet to be demonstrated. In this study, we demonstrate a hallmark of altermagnetism in Mn5Si3 thin films, namely the three options, or variants, for the checkerboard distribution of the magnetic Mn atoms. The magnetic symmetries were altered by field-rotation of the Néel vector along relevant crystal directions, resulting in anomalous Hall effect anisotropy. The experimental results in nanoscale devices were corroborated by a theoretical model involving atomic site dependent anisotropy and bulk Dzyaloshinskii-Moriya interaction for a single variant.

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Cited by in corpus (11)

• Observation of the anomalous Nernst effect in altermagnetic candidate Mn5Si3
• All-electrically controlled spintronics in altermagnetic heterostructures
• Model Hamiltonian for Altermagnetic Topological Insulators
• Light-induced Floquet spin-triplet Cooper pairs in unconventional magnets
• Single-crystalline CrSb(0001) thin films grown by dc magnetron co-sputtering
• Exploration of Altermagnetism in $\mathrm{Ru}{\mathrm{O}}_2$
• Approximate half-integer quantization in anomalous planar transport in $d$-wave altermagnets
• Spin-resolved quasiparticle interference patterns on altermagnets via non-spin-resolved scanning tunneling microscopy
• Eightfold Degenerate Dirac Nodal Line in Collinear Antiferromagnet Mn${}_5$Si${}_3$
• Magnetic aftereffect and Barkhausen effect in thin films of the altermagnetic candidate Mn5Si3
• Unconventional Spin Valve Based on Normal Metal/Chiral Molecule/Altermagnet Junctions