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dc.contributor.author Je, Soong-Geun -
dc.contributor.author Han, Hee-Sung -
dc.contributor.author Kim, Se Kwon -
dc.contributor.author Montoya, Sergio A. -
dc.contributor.author Chao, Weilun -
dc.contributor.author Hong, Ik-Sun -
dc.contributor.author Fullerton, Eric E. -
dc.contributor.author Lee, Ki-Suk -
dc.contributor.author Lee, Kyung-Jin -
dc.contributor.author Im, Mi‐Young -
dc.contributor.author Hong, Jung-Il -
dc.date.accessioned 2020-05-11T08:28:01Z -
dc.date.available 2020-05-11T08:28:01Z -
dc.date.created 2020-04-02 -
dc.date.issued 2020-03 -
dc.identifier.citation ACS Nano, v.14, no.3, pp.3251 - 3258 -
dc.identifier.issn 1936-0851 -
dc.identifier.uri http://hdl.handle.net/20.500.11750/11786 -
dc.description.abstract Topological protection precludes a continuous deformation between topologically inequivalent configurations in a continuum. Motivated by this concept, magnetic skyrmions, topologically nontrivial spin textures, are expected to exhibit topological stability, thereby offering a prospect as a nanometer-scale nonvolatile information carrier. In real materials, however, atomic spins are configured as not continuous but discrete distributions, which raises a fundamental question if the topological stability is indeed preserved for real magnetic skyrmions. Answering this question necessitates a direct comparison between topologically nontrivial and trivial spin textures, but the direct comparison in one sample under the same magnetic fields has been challenging. Here we report how to selectively achieve either a skyrmion state or a topologically trivial bubble state in a single specimen and thereby experimentally show how robust the skyrmion structure is in comparison with the bubbles. We demonstrate that topologically nontrivial magnetic skyrmions show longer lifetimes than trivial bubble structures, evidencing the topological stability in a real discrete system. Our work corroborates the physical importance of the topology in the magnetic materials, which has hitherto been suggested by mathematical arguments, providing an important step toward ever-dense and more-stable magnetic devices. Copyright © 2020 American Chemical Society. -
dc.language English -
dc.publisher American Chemical Society -
dc.title Direct Demonstration of Topological Stability of Magnetic Skyrmions via Topology Manipulation -
dc.type Article -
dc.identifier.doi 10.1021/acsnano.9b08699 -
dc.identifier.wosid 000526301400058 -
dc.identifier.scopusid 2-s2.0-85082342352 -
dc.type.local Article(Overseas) -
dc.type.rims ART -
dc.description.journalClass 1 -
dc.citation.publicationname ACS Nano -
dc.contributor.nonIdAuthor Je, Soong-Geun -
dc.contributor.nonIdAuthor Han, Hee-Sung -
dc.contributor.nonIdAuthor Kim, Se Kwon -
dc.contributor.nonIdAuthor Montoya, Sergio A. -
dc.contributor.nonIdAuthor Chao, Weilun -
dc.contributor.nonIdAuthor Hong, Ik-Sun -
dc.contributor.nonIdAuthor Fullerton, Eric E. -
dc.contributor.nonIdAuthor Lee, Ki-Suk -
dc.contributor.nonIdAuthor Lee, Kyung-Jin -
dc.contributor.nonIdAuthor Im, Mi‐Young -
dc.identifier.citationVolume 14 -
dc.identifier.citationNumber 3 -
dc.identifier.citationStartPage 3251 -
dc.identifier.citationEndPage 3258 -
dc.identifier.citationTitle ACS Nano -
dc.type.journalArticle Article -
dc.description.isOpenAccess N -
dc.subject.keywordAuthor topology manipulation -
dc.subject.keywordAuthor topological stability -
dc.subject.keywordAuthor topological protection -
dc.subject.keywordAuthor magnetic skyrmion -
dc.subject.keywordAuthor magnetic bubble -
dc.subject.keywordAuthor lifetime -
dc.subject.keywordAuthor FeGd -
dc.subject.keywordPlus DYNAMICS -
dc.contributor.affiliatedAuthor Je, Soong-Geun -
dc.contributor.affiliatedAuthor Han, Hee-Sung -
dc.contributor.affiliatedAuthor Kim, Se Kwon -
dc.contributor.affiliatedAuthor Montoya, Sergio A. -
dc.contributor.affiliatedAuthor Chao, Weilun -
dc.contributor.affiliatedAuthor Hong, Ik-Sun -
dc.contributor.affiliatedAuthor Fullerton, Eric E. -
dc.contributor.affiliatedAuthor Lee, Ki-Suk -
dc.contributor.affiliatedAuthor Lee, Kyung-Jin -
dc.contributor.affiliatedAuthor Im, Mi‐Young -
dc.contributor.affiliatedAuthor Hong, Jung-Il -
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Department of Physics and Chemistry Spin Nanotech Laboratory 1. Journal Articles

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