Fig. 1: A micro-patterned spintronic emitter for generating complex structured THz fields.
From: Micro-patterning of spintronic emitters enables ultrabroadband structured terahertz radiation
The antiferromagnetic (AFM), ferromagnetic (FM), and nonmagnetic (NM) metallic heterostructure allows spatial patterning of magnetization (in the FM layer) and charge current (in the NM layer) directions with microscale resolutions, leading to a new capability of generating complex structured THz fields, e.g., azimuthally polarized ultrabroadband THz vector beams
