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Atomically sharp domain walls in an antiferromagnet

Krizek, Filip ; Reimers, Sonka ; Kašpar, Zdeněk ; Marmodoro, Alberto ; Michalička, Jan ; Man, Ondřej ; Edström, Alexander ; Amin, Oliver J. ; Edmonds, Kevin W. and Campion, Richard P. , et al. (2022) In Science Advances 8(13).
Abstract

The interest in understanding scaling limits of magnetic textures such as domain walls spans the entire field of magnetism from its physical fundamentals to applications in information technologies. Here, we explore antiferromagnetic CuMnAs in which imaging by x-ray photoemission reveals the presence of magnetic textures down to nanoscale, reaching the detection limit of this established microscopy in antiferromagnets. We achieve atomic resolution by using differential phase-contrast imaging within aberration-corrected scanning transmission electron microscopy. We identify abrupt domain walls in the antiferromagnetic film corresponding to the Néel order reversal between two neighboring atomic planes. Our work stimulates research of... (More)

The interest in understanding scaling limits of magnetic textures such as domain walls spans the entire field of magnetism from its physical fundamentals to applications in information technologies. Here, we explore antiferromagnetic CuMnAs in which imaging by x-ray photoemission reveals the presence of magnetic textures down to nanoscale, reaching the detection limit of this established microscopy in antiferromagnets. We achieve atomic resolution by using differential phase-contrast imaging within aberration-corrected scanning transmission electron microscopy. We identify abrupt domain walls in the antiferromagnetic film corresponding to the Néel order reversal between two neighboring atomic planes. Our work stimulates research of magnetic textures at the ultimate atomic scale and sheds light on electrical and ultrafast optical antiferromagnetic devices with magnetic field–insensitive neuromorphic functionalities.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Science Advances
volume
8
issue
13
article number
3535
publisher
American Association for the Advancement of Science (AAAS)
external identifiers
  • scopus:85127227497
  • pmid:35353557
ISSN
2375-2548
DOI
10.1126/sciadv.abn3535
language
English
LU publication?
yes
id
f6fc7162-2a31-4e7b-bec0-2e52b9f0d532
date added to LUP
2022-06-09 13:38:35
date last changed
2024-06-28 19:53:21
@article{f6fc7162-2a31-4e7b-bec0-2e52b9f0d532,
  abstract     = {{<p>The interest in understanding scaling limits of magnetic textures such as domain walls spans the entire field of magnetism from its physical fundamentals to applications in information technologies. Here, we explore antiferromagnetic CuMnAs in which imaging by x-ray photoemission reveals the presence of magnetic textures down to nanoscale, reaching the detection limit of this established microscopy in antiferromagnets. We achieve atomic resolution by using differential phase-contrast imaging within aberration-corrected scanning transmission electron microscopy. We identify abrupt domain walls in the antiferromagnetic film corresponding to the Néel order reversal between two neighboring atomic planes. Our work stimulates research of magnetic textures at the ultimate atomic scale and sheds light on electrical and ultrafast optical antiferromagnetic devices with magnetic field–insensitive neuromorphic functionalities.</p>}},
  author       = {{Krizek, Filip and Reimers, Sonka and Kašpar, Zdeněk and Marmodoro, Alberto and Michalička, Jan and Man, Ondřej and Edström, Alexander and Amin, Oliver J. and Edmonds, Kevin W. and Campion, Richard P. and Maccherozzi, Francesco and Dhesi, Samjeet S. and Zubáč, Jan and Kriegner, Dominik and Carbone, Dina and Železný, Jakub and Výborný, Karel and Olejník, Kamil and Novák, Vít and Rusz, Jan and Idrobo, Juan Carlos and Wadley, Peter and Jungwirth, Tomas}},
  issn         = {{2375-2548}},
  language     = {{eng}},
  number       = {{13}},
  publisher    = {{American Association for the Advancement of Science (AAAS)}},
  series       = {{Science Advances}},
  title        = {{Atomically sharp domain walls in an antiferromagnet}},
  url          = {{http://dx.doi.org/10.1126/sciadv.abn3535}},
  doi          = {{10.1126/sciadv.abn3535}},
  volume       = {{8}},
  year         = {{2022}},
}