Tuning magnetic chirality by dipolar interactions

Juriaan Lucassen (Corresponding author), Mariëlle J. Meijer, Oleg Kurnosikov, Henk J.M. Swagten, Bert Koopmans, Reinoud Lavrijsen, Fabian Kloodt-Twesten, Robert Frömter, Rembert A. Duine

Research output: Contribution to journalArticleAcademicpeer-review

20 Citations (Scopus)
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The stabilization of chiral magnetic domain walls and skyrmions has been attributed to the actively investigated Dzyaloshinskii-Moriya interaction. Recently, however, predictions were made that suggest dipolar interactions can also stabilize chiral domain walls and skyrmions, but direct experimental evidence has been lacking. Here we show that dipolar interactions can indeed stabilize chiral domain walls by directly imaging the magnetic domain walls using scanning electron microscopy with polarization analysis in archetype Pt/CoB/Ir thin film multilayers. We further demonstrate the competition between the Dzyaloshinskii-Moriya and dipolar interactions by imaging a reversal of the domain wall chirality as a function of the magnetic layer thickness. Finally, we suggest that this competition can be tailored by a Ruderman-Kittel-Kasuya-Yosida interaction. Our work therefore reveals that dipolar interactions play a key role in the stabilization of chiral spin textures. This insight will open up new routes towards balancing interactions for the stabilization of chiral magnetism.

Original languageEnglish
Article number157201
Number of pages6
JournalPhysical Review Letters
Issue number15
Publication statusPublished - 11 Oct 2019


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