Informativo

Seminário da Pós – dia 27/03/25

“3D magnetic textures in confined systems”

Dora Altbir Drullinsky – UNIVERSIDAD DE SANTIAGO DE CHILE.

DATA: 27/03/2025 (quinta-feira).
HORÁRIO: 10h.
LOCAL: Auditório do CCE.

RESUMO:
Recent advances in experimental techniques have made nanoscale magnetism a subject of intense research, both from an applied and fundamental perspective. One of the most intriguing features of nanomagnets is their ability to host various magnetization textures that behave as individual particles. Some of these collective magnetization configurations are solitonic textures that can be controlled using electric currents, magnetic fields, and temperature gradients.

Initially, research efforts focused on understanding these magnetic textures in quasi-two-dimensional nanoparticles. However, a significant breakthrough in the field came with the fabrication of three-dimensional (3D) nanomaterials. The inclusion of a third dimension has had such a profound impact that it has given rise to an emerging and challenging research area: 3D nanomagnetism. Three-dimensional structures are promising candidates for spintronic applications, such as racetrack memory and logic devices, as their topological protection ensures robust stability—even when the magnetization profile deviates from the ground state due to geometric constraints.

During the talk, I will present some results from our research group on the analysis of the properties of hopfions and torons, two key topological textures that emerge in the context of 3D nanomagnetism. These objects have recently attracted considerable interest, not only due to their theoretical properties but also because of their potential technological applications.