Atomically sharp domain walls in an antiferromagnet

Filip Krizek, Sonka Reimers, Zdeněk Kašpar, Alberto Marmodoro, Jan Michalička, Ondřej Man, Alexander Edström, Oliver J. Amin, Kevin W. Edmonds, Richard P. Campion, Francesco Maccherozzi, Samjeet S. Dhesi, Jan Zubáč, Dominik Kriegner, Dina Carbone, Jakub Železný, Karel Výborný, Kamil Olejník, Vít Novák, Jan RuszJuan Carlos Idrobo, Peter Wadley, Tomas Jungwirth

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Article number3535
JournalScience Advances
Issue number13
Publication statusPublished - 2022

Subject classification (UKÄ)

  • Condensed Matter Physics


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