Research

In magnetic topological materials, the electronic and magnetic properties of the system are often intricately coupled. Specifically, regions with spatially varying magnetization (e.g., domain walls or non-collinear spin textures) provide an exciting platform to study how Berry curvature effects are manifested and potentially controlled in real space. We are currently developing novel visualization techniques that will enable us to detect subtle changes in both magnetization and Berry curvature with sub-micrometer spatial resolution.

Spin waves, or magnons, have emerged as a promising method for transmitting coherent spin information over macroscopic distances (greater than a few micrometers). Despite ongoing research, key questions remain about the speed and wavelength of actively launched spin waves, as well as the types of spin interactions that influence their transport dynamics. Recent findings have shown that long-range dipolar interactions can significantly affect spin wave dispersion, even in antiferromagnets that do not exhibit net magnetization. By employing a combination of optical, electro-optic, and scattering probes, we aim to deepen our understanding of how both exchange and long-range interactions impact spin wave transport properties.