Show simple item record

dc.contributor.authorChen, Lebing
Chung, Jae-Ho
Gao, Bin
Chen, Tong
Stone, Matthew B.
Kolesnikov, Alexander I.
Huang, Qingzhen
Dai, Pengcheng
dc.date.accessioned 2019-01-09T17:21:10Z
dc.date.available 2019-01-09T17:21:10Z
dc.date.issued 2018
dc.identifier.citation Chen, Lebing, Chung, Jae-Ho, Gao, Bin, et al.. "Topological Spin Excitations in Honeycomb Ferromagnet CrI3." Physical Review X, 8, no. 4 (2018) https://doi.org/10.1103/PhysRevX.8.041028.
dc.identifier.urihttps://hdl.handle.net/1911/105023
dc.description.abstract In two-dimensional honeycomb ferromagnets, bosonic magnon quasiparticles (spin waves) may either behave as massless Dirac fermions or form topologically protected edge states. The key ingredient defining their nature is the next-nearest-neighbor Dzyaloshinskii-Moriya interaction that breaks the inversion symmetry of the lattice and discriminates chirality of the associated spin-wave excitations. Using inelastic neutron scattering, we find that spin waves of the insulating honeycomb ferromagnet CrI3 (TC=61 K) have two distinctive bands of ferromagnetic excitations separated by a ∼4 meV gap at the Dirac points. These results can only be understood by considering a Heisenberg Hamiltonian with Dzyaloshinskii-Moriya interaction, thus providing experimental evidence that spin waves in CrI3 can have robust topological properties potentially useful for dissipationless spintronic applications.
dc.language.iso eng
dc.rights Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.title Topological Spin Excitations in Honeycomb Ferromagnet CrI3
dc.type Journal article
dc.citation.journalTitle Physical Review X
dc.citation.volumeNumber 8
dc.citation.issueNumber 4
dc.identifier.digital PhysRevX.8.041028
dc.contributor.publisher American Physical Society
dc.type.dcmi Text
dc.identifier.doihttps://doi.org/10.1103/PhysRevX.8.041028
dc.type.publication publisher version
dc.citation.articleNumber 041028


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
Except where otherwise noted, this item's license is described as Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.