Work

Diode effect for skyrmions interacting with linear protrusion defects

Year: 2025

Type: article

Abstract: We simulate collectively interacting skyrmions in a channel with periodic asymmetry, and find a strong diode effect for the skyrmion flow. There is also an asymmetry in the skyrmion annihilation rate for currents applied along the hard or easy substrate asymmetry direction, with a higher annihilation rate for hard direction currents. We map out the diode efficiency as a function of magnetic field and substrate asymmetry angle. We also show that the Magnus force impacts the diode motion and annihilation rate asymmetry by forcing skyrmions into corners of the protrusion geometry.

Source: New Journal of Physics

DOI: 10.1088/1367-2630/ae1637

Authors: J C Bellizotti Souza, C J O Reichhardt, C Reichhardt, N P Vizarim, P A Venegas

Institutions: Universidade Estadual de Campinas (UNICAMP), Los Alamos National Laboratory, Universidade Estadual Paulista (Unesp)

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: gold

Estimated APC paid: $2,610

Funders: Fundação de Amparo à Pesquisa do Estado de São Paulo, Los Alamos National Laboratory