Topological magnons on the checkerboard lattice

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dc.creatorAntônio Sérgio Teixeira Pires
dc.date.accessioned2023-06-28T13:20:10Z
dc.date.accessioned2025-09-08T23:10:39Z
dc.date.available2023-06-28T13:20:10Z
dc.date.issued2021
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.identifier.doihttps://doi.org/10.1016/j.physb.2020.412490
dc.identifier.issn1873-2135
dc.identifier.urihttps://hdl.handle.net/1843/55461
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofPhysica B: Condensed Matter
dc.rightsAcesso Restrito
dc.subjectIsoladores topológicos
dc.subject.otherTopological insulators
dc.subject.otherCheckerboard lattice
dc.subject.otherDzyaloshinskii-Moriya interaction
dc.titleTopological magnons on the checkerboard lattice
dc.typeArtigo de periódico
local.citation.epage7
local.citation.spage1
local.citation.volume602
local.description.resumoHere we investigate topological magnon effects in a ferromagnetic checkerboard lattice, also known as planar pyrochlore, with a Dzyaloshinskii-Moriya interaction (DMI). The DMI breaks the time-reversal symmetry and leads to topological bands with nontrivial Chern numbers, which indicates the existence of edge state modes. We show that the model studied here can be treated as a two-band model, and we calculate the Berry curvature, the spin Hall conductivity, the spin Nernst coefficient, and the thermal Hall conductivity as a function of temperature. Measurements of these quantities can be used to detect finite Berry curvatures. We also analyze the effect of an applied magnetic field and take into account higher-order contributions responsible to anharmonic magnon effects. Our study complements others done in the honeycomb, kagome, Lieb, Shastry-Sutherland, and pyrochlore lattices.
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S0921452620304907

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