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Quantum Chemistry

Co-existence of Bloch and Neel walls in a collinear antiferromagnet

arXiv
Authors: M. S. Wornle, P. Welter, M. Giraldo, T. Lottermoser, M. Fiebig, P. Gambardella, C. L. Degen

Year

2020

Paper ID

20588

Status

Preprint

Abstract Read

~2 min

Abstract Words

107

Citations

N/A

Abstract

We resolve the domain-wall structure of the model antiferromagnet Cr2O3 using nanoscale scanning diamond magnetometry and second-harmonic-generation microscopy. We find that the 180circ domain walls are predominantly Bloch-like, and can co-exist with Néel walls in crystals with significant in-plane anisotropy. In the latter case, Néel walls that run perpendicular to a magnetic easy axis acquire a well-defined chirality. We further report quantitative measurement of the domain-wall width and surface magnetization. Our results provide fundamental input and an experimental methodology for the understanding of domain walls in pure, intrinsic antiferromagnets, which is relevant to achieve electrical control of domain-wall motion in antiferromagnetic compounds.

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  • This paper contributes to the Quantum Chemistry research area in the Quantum Articles archive.
  • It adds a 2020 reference point for readers tracking recent quantum research.
  • We resolve the domain-wall structure of the model antiferromagnet Cr2O3 using nanoscale scanning diamond magnetometry and second-harmonic-generation microscopy.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2009.09015 [2] arXiv https://arxiv.org/abs/2009.09015 [3] Publisher https://arxiv.org/abs/2009.09015

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