2021
DOI: 10.48550/arxiv.2110.10894
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Massless Dirac magnons in the two dimensional van der Waals honeycomb magnet CrCl3

Lebing Chen,
Matthew B. Stone,
Alexander I. Kolesnikov
et al.

Abstract: Two dimensional van der Waals ferromagnets with honeycomb structures are expected to host the bosonic version of Dirac particles in their magnon excitation spectra. Using inelastic neutron scattering, we study spin wave excitations in polycrystalline CrCl 3 , which exhibits ferromagnetic honeycomb layers with antiferromagnetic stackings along the c-axis. For comparison, polycrystal samples of CrI 3 with different grain sizes are also studied. We find that the powder-averaged spin wave spectrum of CrCl 3 at T =… Show more

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