2025/10/08 by Yogesh Kumar, Kumar, Yogesh, Hurmal Saren +3
Engineering · Materials Science · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #FOS: Physical sciences #Magnetic Properties of Alloys #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Metallic Glasses and Amorphous Alloys #Other Condensed Matter (cond-mat.other)
paper · pdf · doi:10.48550/arxiv.2510.07020
openalex publication_date 2025/10/08 · openalex created_date 2025/10/18 · openalex updated_date 2026/07/28
Thermal gradient driven skyrmion dynamics offers a promising route toward green spintronics, enabling the utilization of waste heat for information transport and processing. Using micromagnetic simulations, we investigate Neel skyrmions in a Co-Pt bilayer nanoracetrack and demonstrate that stochastic torques induced by a thermal gradient drive skyrmion motion toward the hotter region with a nearly vanishing Hall angle. The dynamics depends sensitively on intrinsic material parameters - the skyrmion velocity decreases with increasing damping constant, increases with stronger thermal gradients, and varies systematically with saturation magnetization, interfacial DMI strength, and uniaxial out of plane anisotropy. Importantly, we identify a specific range of material parameters within which the skyrmion velocity changes sharply while the Hall angle remains strongly suppressed, saturating near zero. This comprehensive parameter-dependent study establishes a universal design framework for minimizing the Hall effect in thermal gradient driven spintronic systems.