Room-temperature terahertz anomalous Hall effect in Weyl antiferromagnet Mn3Sn thin films

Abstract

Antiferromagnets promise great potential for spintronic applications due to their spin excitations at terahertz frequencies, however, read out of the spin state is hindered by the small response to external fields. Here the authors demonstrate all optical readout of the spin state of antiferromagnetic Mn3Sn at THz frequency.