Topological Hall and spin Hall effects in disordered skyrmionic textures

Papa Birame Ndiaye, Collins Ashu Akosa, Aurélien Manchon

研究成果査読

37 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号064426
ジャーナルPhysical Review B
95
6
DOI
出版ステータスPublished - 2017 2 23
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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