Designer Spin Textures in Van der Waals Magnets

The recent emergence of two-dimensional magnets has provided a new playground for low-dimensional magnetism. Among various directions, the ability to general and control spin textures has been long sought after. In this talk, I will discuss two new routes towards this goal. The first route is via period strain patterning, which can give rise to topological spin textures due to the modulation of magnetic anisotropy locked onto the strain field. We show that the stability of the topological spin texture can be controlled by the strain field profile. In the second route, we show that in properly designed 2D magnet/semiconductor heterostructures, intervalley coupling can be induced by the magnetic substrate, leading to the appearance of a spin texture. These results will be discuss using both phenomenological modeling and ab initio calculations, and their experimental realization will be discussed as well.