Work

Topological Hall and spin Hall effects in disordered skyrmionic textures

Year: 2017

Type: article

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-B\"uttiker 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.

Source: Physical review. B./Physical review. B

DOI: 10.1103/physrevb.95.064426

Authors: Papa Birame Ndiaye, Collins Ashu Akosa, Aurélien Manchon

Institution: King Abdullah University of Science and Technology

Language: English

Topic: Magnetic properties of thin films

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funder: King Abdullah University of Science and Technology

Award: G3506073641