Quantum fluctuations stabilize skyrmion textures
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Campo DC | Valor | Idioma |
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dc.contributor | Grupo de Nanofísica | es |
dc.contributor.author | Roldán-Molina, A. | - |
dc.contributor.author | Santander, M.J. | - |
dc.contributor.author | Núñez, A.S. | - |
dc.contributor.author | Fernández-Rossier, Joaquín | - |
dc.contributor.other | Universidad de Alicante. Departamento de Física Aplicada | es |
dc.contributor.other | Universidad de Alicante. Instituto Universitario de Materiales | es |
dc.date.accessioned | 2016-04-15T08:10:43Z | - |
dc.date.available | 2016-04-15T08:10:43Z | - |
dc.date.issued | 2015-12-23 | - |
dc.identifier.citation | Physical Review B. 2015, 92: 245436. doi:10.1103/PhysRevB.92.245436 | es |
dc.identifier.issn | 0163-1829 (Print) | - |
dc.identifier.issn | 1095-3795 (Online) | - |
dc.identifier.uri | http://hdl.handle.net/10045/54255 | - |
dc.description.abstract | We study the quantum spin waves associated to skyrmion textures. We show that the zero-point energy associated to the quantum spin fluctuations of a noncollinear spin texture produce Casimir-like magnetic fields. We study the effect of these Casimir fields on the topologically protected noncollinear spin textures known as skyrmions. In a Heisenberg model with Dzyalonshinkii-Moriya interactions, chosen so the classical ground state displays skyrmion textures, we calculate the spin-wave spectrum, using the Holstein-Primakoff approximation, and the associated zero-point energy, to the lowest order in the spin-wave expansion. Our calculations are done both for the single-skyrmion case, for which we obtain a discrete set of skyrmion bound states, as well as for the skyrmion crystal, for which the resulting spectrum gives the spin-wave bands. In both cases, our calculations show that the Casimir magnetic field contributes up to 10% of the total Zeeman energy necessary to delete the skyrmion texture with an applied field. | es |
dc.description.sponsorship | The authors acknowledge funding from Fondecyt Grant No. 1150072, Grant No. ICM P10-061-F by Fondo de Innovación para la Competitividad-MINECON, and Anillo Grant No. ACT 1117. A.S.N. also acknowledges support from Financiamiento Basal para Centros Científicos y Tecnológicos de Excelencia, under Project No. FB 0807(Chile). | es |
dc.language | eng | es |
dc.publisher | American Physical Society | es |
dc.rights | © 2015 American Physical Society | es |
dc.subject | Spin waves | es |
dc.subject | Quantum fluctuations | es |
dc.subject | Skyrmion textures | es |
dc.subject.other | Física de la Materia Condensada | es |
dc.title | Quantum fluctuations stabilize skyrmion textures | es |
dc.type | info:eu-repo/semantics/article | es |
dc.peerreviewed | si | es |
dc.identifier.doi | 10.1103/PhysRevB.92.245436 | - |
dc.relation.publisherversion | http://dx.doi.org/10.1103/PhysRevB.92.245436 | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
Aparece en las colecciones: | INV - Grupo de Nanofísica - Artículos de Revistas |
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Archivo | Descripción | Tamaño | Formato | |
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2015_Roldan_etal_PhysRevB.pdf | 1,39 MB | Adobe PDF | Abrir Vista previa | |
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