High-efficiency optical control of spin textures in 2D magnets

The emergent two-dimensional (2D) layered van der Waals magnets provide ideal platforms for developing the atomically thin magneto-optical and magnetoelectric devices. Though many have envisioned that 2D magnets should allow efficient control of magnetism by a variety of external stimuli, true breakthroughs are still lacking. In this talk I will analyze the challenges and present our experimental progress on efficient optical control of 2D magnets. Specifically, the results show that the laser shining of tens of uW/um2 can effectively affect the domain behaviors of 2D magnets. The efficient optical control of 2D magnets potentially open up new avenues towards low-power spintronics and photonics.