Topological Hall and spin Hall effects in disordered skyrmionic textures
KAUST DepartmentPhysical Sciences and Engineering (PSE) Division
KAUST Grant NumberOSR-CRG URF/1/1693-01
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AbstractWe carry out a thorough study of the topological Hall and topological spin Hall effects in disordered skyrmionic systems: the dimensionless (spin) Hall angles are evaluated across the energy-band structure in the multiprobe Landauer-Büttiker formalism and their link to the effective magnetic field emerging from the real-space topology of the spin texture is highlighted. We discuss these results for an optimal skyrmion size and for various sizes of the sample and find that the adiabatic approximation still holds for large skyrmions as well as for nanoskyrmions. Finally, we test the robustness of the topological signals against disorder strength and show that the topological Hall effect is highly sensitive to momentum scattering.
CitationNdiaye PB, Akosa CA, Manchon A (2017) Topological Hall and spin Hall effects in disordered skyrmionic textures. Physical Review B 95. Available: http://dx.doi.org/10.1103/PhysRevB.95.064426.
SponsorsThis work was supported by the King Abdullah University of Science and Technology through Award No. OSR-CRG URF/1/1693-01 from the Office of Sponsored Research. P.B.N. acknowledges inspiring discussions with A. Abbout, S. Ghosh, and Z. T. Ndiaye.
PublisherAmerican Physical Society (APS)
JournalPhysical Review B