Picosecond Trajectory of Two-Dimensional Vortex Motion in Visualized by Terahertz Second Harmonic Generation

S Nakamura, H Matsumoto, H Ogawa, T Kobayashi… - Physical review …, 2024 - APS
We have investigated the vortex dynamics in a thin film of an iron-based superconductor
FeSe 0.5 Te 0.5 by observing second-harmonic generation (SHG) in the terahertz frequency …