Resonant optical detection of 2D spin textures

The recently discovered atomically-thin magnetic crystals provide a unique playground for understanding magnetization in 2D confinement and developing new approaches to manipulating magnetism for novel spintronic devices. In particular, antiferromagnets (AFMs) are promising for realizing high-speed information processing given their THz magnetic resonance frequency. However, they are also less sensitive to optical and electrical detection due to their net zero magnetization. In this talk, I will discuss our recent results on 2D AFM transition-metal trichalcogenides, where we couple the magnetic transitions into the mechanical degree of freedom. We observed the expected steady-state spin transitions based on magnetostriction effects and also saw signatures of additional transition points related to the magnetic domain dynamics.