Topological spin waves in the atomic-scale magnetic skyrmion crystal
Author
dc.contributor.author
Roldán Molina, A.
Author
dc.contributor.author
Núñez Vásquez, Álvaro
Author
dc.contributor.author
Fernández Rossier, J.
Admission date
dc.date.accessioned
2016-10-07T14:54:41Z
Available date
dc.date.available
2016-10-07T14:54:41Z
Publication date
dc.date.issued
2016
Cita de ítem
dc.identifier.citation
New J. Phys. 18 (2016) 045015
es_ES
Identifier
dc.identifier.other
10.1088/1367-2630/18/4/045015
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/140687
Abstract
dc.description.abstract
We study the spin waves of the triangular skyrmion crystal that emerges in a two-dimensional spin lattice model as a result of the competition between Heisenberg exchange, Dzyalonshinkii-Moriya interactions, Zeeman coupling and uniaxial anisotropy. The calculated spin wave bands have a finite Berry curvature that, in some cases, leads to non-zero Chern numbers, making this system topologically distinct from conventional magnonic systems. We compute the edge spin-waves, expected from the bulk-boundary correspondence principle, and show that they are chiral, which makes them immune to elastic backscattering. Our results illustrate how topological phases can occur in self-generated emergent superlattices at the mesoscale.
es_ES
Patrocinador
dc.description.sponsorship
Fondecyt
1150072
Fondo de Innovacion para la Competitividad-MINECON
ICM P10-061-F
Anillo
ACT 1117
Financiamiento Basal para Centros Cientificos y Tecnologicos de Excelencia
FB 0807