Tuning magnetic chirality by dipolar interactions

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Uittreksel

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.

Originele taal-2Engels
Artikelnummer157201
Aantal pagina's6
TijdschriftPhysical Review Letters
Volume123
Nummer van het tijdschrift15
DOI's
StatusGepubliceerd - 11 okt 2019

Vingerafdruk

chirality
tuning
domain wall
interactions
stabilization
magnetic domains
textures
routes
scanning electron microscopy
polarization
thin films
predictions

Citeer dit

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title = "Tuning magnetic chirality by dipolar interactions",
abstract = "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.",
author = "Juriaan Lucassen and Meijer, {Mari{\"e}lle J.} and Oleg Kurnosikov and Swagten, {Henk J.M.} and Bert Koopmans and Reinoud Lavrijsen and Fabian Kloodt-Twesten and Robert Fr{\"o}mter and Duine, {Rembert A.}",
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Tuning magnetic chirality by dipolar interactions. / Lucassen, Juriaan (Corresponding author); Meijer, Mariëlle J.; Kurnosikov, Oleg; Swagten, Henk J.M.; Koopmans, Bert; Lavrijsen, Reinoud; Kloodt-Twesten, Fabian; Frömter, Robert; Duine, Rembert A.

In: Physical Review Letters, Vol. 123, Nr. 15, 157201, 11.10.2019.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

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AU - Lucassen, Juriaan

AU - Meijer, Mariëlle J.

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AU - Swagten, Henk J.M.

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AU - Lavrijsen, Reinoud

AU - Kloodt-Twesten, Fabian

AU - Frömter, Robert

AU - Duine, Rembert A.

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AB - 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.

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