Behavior of topological magnetic textures interacting with interfaces aiming for control and stability in spintronics

• Grant number: 24/13248-5
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: November 01, 2024
• End date: October 31, 2027
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Fanny Béron
• Grantee: Nicolas Porto Vizarim
• Host Institution: Instituto de Física Gleb Wataghin (IFGW). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Associated research grant: 17/10581-1 - Emergent phenomena in reduced dimension systems, AP.ESP

Abstract

The constant pursuit of miniaturizing electronic components has been one of the greatest challenges in the application of new processors and logic devices. However, the advent of spintronics, where spin textures are stabilized and manipulated, has emerged as one of the most promising alternatives to aid in the storage, control, and transport of information in nanometer-scale devices. Among the most well-known topological textures, we can cite skyrmions, bimerons, and skyrmioniums. The precise stabilization and motion control of these spin textures are essential for technological applications. Using computational simulations along with experimental observations, our goal is to characterize the conditions for the stabilization and dynamic behavior of these textures in ferromagnetic thin films in the presence of an interface. This interface separates distinct regions in the system with different magnetic properties. Once the stabilization conditions are verified, a transport current will be applied to induce the propagation of the magnetic textures across the interface. We also aim to investigate the conditions for guided motion of these quasi-particles through the interface. This will enable us to determine the conditions for the onset of movement, dynamic regimes, and possible conditions for annihilation or topological transition. We hope that the results obtained in this project will contribute to a detailed description of the dynamics of bimerons and skyrmioniums and aid in the development of new spintronic devices.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

SOUZA, J. C. BELLIZOTTI; VIZARIM, N. P.; REICHHARDT, C. J. O.; REICHHARDT, C.; VENEGAS, P. A.. Comparing dynamics, pinning and ratchet effects for skyrmionium, skyrmions, and antiskyrmions. JOURNAL OF PHYSICS-CONDENSED MATTER, v. 37, n. 16, p. 16-pg., 2025-04-21. (24/13248-5, 23/17545-1, 24/02941-1)

SOUZA, J. C. BELLIZOTTI; VIZARIM, N. P.; REICHHARDT, C. J. O.; REICHHARDT, C.; VENEGAS, P. A.. Skyrmionium dynamics and stability on one dimensional anisotropy patterns. JOURNAL OF PHYSICS-CONDENSED MATTER, v. 37, n. 19, p. 7-pg., 2025-05-12. (22/14053-8, 23/17545-1, 24/02941-1, 24/13248-5)