Topological Hall and spin Hall effects in disordered skyrmionic textures

Papa Birame Ndiaye, Collins Ashu Akosa, Aurélien Manchon

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

We 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.

Original languageEnglish
Article number064426
JournalPhysical Review B
Volume95
Issue number6
DOIs
Publication statusPublished - 2017 Feb 23
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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