Visualizing Vortex Cluster Dynamics in the Weak Type-II Superconductor CaSb 2
The episode discusses a paper visualizing vortex cluster dynamics in CaSb2 using SQUID imaging. The research found that these clusters show enhanced boundary susceptibility and suppressed internal motion, which contradicts standard isolated-vortex models. This observation suggests non-monotonic vortex–vortex interactions and pushes beyond single-band superconductor theories.