After the recent progress in fields of ultrafast demagnetization  and intense terahertz (THz) sources , the THz spectroscopy has found its way to explore ultrafast spintronic phenomena. By covering energies from 0.4 to 200 meV, it complements optical pump-probe techniques by resonant probing of (overlapping) various excitations in solid states, such as electron scattering rate, spin-orbit interaction or antiferromagnetic resonance.
In this talk, we will show how time-resolved THz and optical spectroscopy can provide new insight into well established spintronic phenomena like anisotropic magnetoresistance, ultrafast demagnetization, or spin Hall and Seebeck effects [4,5], as well as the recently observed opto-electrical recording into antiferromagnetic metal CuMnAs .
 T. Seifert et al., Nature Phot. 10, 483 (2016).
 P. Němec et al., Nature Physics 14, 229 (2018).
 L. Nádvorník et al., arXiv:2010.06280 (2020).
 L. Nádvorník et al., Scientific Reports 6, 22901 (2016).
 T. Seifert et al., Nature Communications 9, 2899 (2018).
 Z. Kašpar et al., Nature Nanoelectronics 10, 1038 (2020).