DQMP Informal Seminar - Challenges in identifying chiral spin textures with Hall effects - Graham Kimbell

11.02.2022 14:00 – 15:00

Abstract: Chiral spin textures such as skyrmions are of growing interest in the field of spintronics for their potential use in computing devices. Hall effect measurements are a powerful method to probe the electronic and magnetic properties of materials. The topological Hall effect, which appears as anomalies in Hall measurements, has frequently been used as evidence of chiral spin textures. However, experimental issues and inhomogeneity in samples can lead to Hall effect anomalies which can be easily mistaken for a topological Hall signal. In this talk I will discuss the use and limitations of the topological Hall effect for identifying chiral spin textures, focussing on SrRuO3. I will also discuss our evidence of an apparent topological Hall effect in SrRuO3 thin films, which is instead likely caused by single unit cell thickness variations.

Lieu

Bâtiment: Ecole de Physique

Auditoire Stückelberg and ZOOM

entrée libre