Year: 2025
Type: article
Abstract: We investigate the emergence of topological Hall-like signals in disordered multidomain ferromagnets. Nonmonotonic behavior in Hall resistivity, commonly attributed to topological spin textures such as skyrmions, is produced in a random resistor network model without any chirality. It arises from simple mechanisms of the anomalous Hall effect in combination with the domain wall scattering. By varying domain configurations and domain wall resistances, we explore the conditions under which the nonmonotonic resistivity can be enhanced. Our results emphasize the need for careful analysis in distinguishing between true topological Hall effects and artifacts caused by domain disorders.
Authors: Houssam Sabri, Benjamin E. Carlson, Sergey S. Pershoguba, Jiadong Zang
Institution: University of New Hampshire
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4409645868