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dc.contributor.authorNdiaye, Papa Birame
dc.contributor.authorAbbout, Adel
dc.contributor.authorGoli, V. M. L. D. P.
dc.contributor.authorManchon, Aurelien
dc.date.accessioned2019-11-04T13:58:11Z
dc.date.available2019-11-04T13:58:11Z
dc.date.issued2019-10-28
dc.identifier.citationNdiaye, P. B., Abbout, A., Goli, V. M. L. D. P., & Manchon, A. (2019). Quantum anomalous Hall effect and Anderson-Chern insulating regime in the noncollinear antiferromagnetic 3Q state. Physical Review B, 100(14). doi:10.1103/physrevb.100.144440
dc.identifier.doi10.1103/physrevb.100.144440
dc.identifier.urihttp://hdl.handle.net/10754/659516
dc.description.abstractWe investigate the emergence of both quantum anomalous Hall and disorder-induced Anderson-Chern insulating phases in two-dimensional hexagonal lattices, with an antiferromagnetically ordered 3Q state and in the absence of spin-orbit coupling. Using tight-binding modeling, we show that such systems display not only a spin-polarized edge-localized current, the chirality of which is energy dependent, but also an impurity-induced transition from trivial metallic to topological insulating regimes, through one edge mode plateau. We compute the gaps' phase diagrams and demonstrate the robustness of the edge channel against deformation and disorder. Our study hints at the 3Q state as a promising building block for dissipationless spintronics based on antiferromagnets.
dc.description.sponsorshipThe authors thank F. Piéchon, Z. Thiam, G. E. W. Bauer, K.-J. Lee, X. R. Wang, and H. Bahlouli for valuable discussions. We also acknowledge computing time on the supercomputers SHAHEEN at the KAUST Supercomputing Centre and the team assistance. This work was supported by the King Abdullah University of Science and Technology (KAUST) through the Office of Sponsored Research (OSR) under Grant No. OSR-2015-CRG4-2626. P.B.N. acknowledges the support provided by the Deanship of Scientific Research at King Fahd University of Petroleum and Minerals (KFUPM) through Project No. SR181002.
dc.publisherAmerican Physical Society (APS)
dc.relation.urlhttps://link.aps.org/doi/10.1103/PhysRevB.100.144440
dc.rightsArchived with thanks to Physical Review B
dc.titleQuantum anomalous Hall effect and Anderson-Chern insulating regime in the noncollinear antiferromagnetic 3Q state
dc.typeArticle
dc.contributor.departmentMaterials Science and Engineering Program
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.contributor.departmentPhysical Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
dc.identifier.journalPhysical Review B
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionDepartment of Physics, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
kaust.personNdiaye, Papa Birame
kaust.personAbbout, Adel
kaust.personGoli, V. M. L. D. P.
kaust.personManchon, Aurelien
kaust.personManchon, Aurelien
kaust.grant.numberGrant No. OSR-2015-CRG4-2626
refterms.dateFOA2019-11-04T13:58:48Z
kaust.acknowledged.supportUnitKAUST Supercomputing Centre
kaust.acknowledged.supportUnitOffice of Sponsored Research (OSR)


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