Writing and Detecting Topological Charges in Exfoliated FeGeTe.

FeGeTe is a promising two-dimensional (2D) van der Waals (vdW) magnet for practical applications, given its magnetic properties. These include Curie temperatures above room temperature, and topological spin textures─TST (both merons and skyrmions), responsible for a pronounced anomalous Hall effect (AHE) and its topological counterpart (THE), which can be harvested for spintronics. Here, we show that both the AHE and THE can be amplified considerably by just adjusting the thickness of exfoliated FeGeTe, with THE becoming observable even in zero magnetic field due to a field-induced unbalance in topological charges.

Coexistence of Merons with Skyrmions in the Centrosymmetric Van Der Waals Ferromagnet Fe GeTe.

Fe GeTe is a centrosymmetric, layered van der Waals (vdW) ferromagnet that displays Curie temperatures T (270-330 K) that are within the useful range for spintronic applications. However, little is known about the interplay between its topological spin textures (e.g.