Emergent chirality in a polar meron to skyrmion phase transition

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dc.citation.articleNumber1355en_US
dc.citation.journalTitleNature Communicationsen_US
dc.citation.volumeNumber14en_US
dc.contributor.authorShao, Yu-Tsunen_US
dc.contributor.authorDas, Sujiten_US
dc.contributor.authorHong, Zijianen_US
dc.contributor.authorXu, Ruijuanen_US
dc.contributor.authorChandrika, Swathien_US
dc.contributor.authorGómez-Ortiz, Fernandoen_US
dc.contributor.authorGarcía-Fernández, Pabloen_US
dc.contributor.authorChen, Long-Qingen_US
dc.contributor.authorHwang, Harold Y.en_US
dc.contributor.authorJunquera, Javieren_US
dc.contributor.authorMartin, Lane W.en_US
dc.contributor.authorRamesh, Ramamoorthyen_US
dc.contributor.authorMuller, David A.en_US
dc.date.accessioned2023-04-25T14:48:17Zen_US
dc.date.available2023-04-25T14:48:17Zen_US
dc.date.issued2023en_US
dc.description.abstractPolar skyrmions are predicted to emerge from the interplay of elastic, electrostatic and gradient energies, in contrast to the key role of the anti-symmetric Dzyalozhinskii-Moriya interaction in magnetic skyrmions. Here, we explore the reversible transition from a skyrmion state (topological charge of −1) to a two-dimensional, tetratic lattice of merons (with topological charge of −1/2) upon varying the temperature and elastic boundary conditions in [(PbTiO3)16/(SrTiO3)16]8 membranes. This topological phase transition is accompanied by a change in chirality, from zero-net chirality (in meronic phase) to net-handedness (in skyrmionic phase). We show how scanning electron diffraction provides a robust measure of the local polarization simultaneously with the strain state at sub-nm resolution, while also directly mapping the chirality of each skyrmion. Using this, we demonstrate strain as a crucial order parameter to drive isotropic-to-anisotropic structural transitions of chiral polar skyrmions to non-chiral merons, validated with X-ray reciprocal space mapping and phase-field simulations.en_US
dc.identifier.citationShao, Yu-Tsun, Das, Sujit, Hong, Zijian, et al.. "Emergent chirality in a polar meron to skyrmion phase transition." <i>Nature Communications,</i> 14, (2023) Springer Nature: https://doi.org/10.1038/s41467-023-36950-x.en_US
dc.identifier.digitals41467-023-36950-xen_US
dc.identifier.doihttps://doi.org/10.1038/s41467-023-36950-xen_US
dc.identifier.urihttps://hdl.handle.net/1911/114849en_US
dc.language.isoengen_US
dc.publisherSpringer Natureen_US
dc.rightsThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleEmergent chirality in a polar meron to skyrmion phase transitionen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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