Third harmonic characterization of antiferromagnetic heterostructures.

ABSTRACT: Electrical switching of antiferromagnets is an exciting recent development in spintronics, which promises active antiferromagnetic devices with high speed and low energy cost. In this emerging field, there is an active debate about the mechanisms of current-driven switching of antiferromagnets. For heavy-metal/ferromagnet systems, harmonic characterization is a powerful tool to quantify current-induced spin-orbit torques and spin Seebeck effect and elucidate current-induced switching. However, harmonic measurement of spin-orbit torques has never been verified in antiferromagnetic heterostructures. Here, we report harmonic measurements in Pt/α-Fe₂O₃ bilayers, which are explained by our modeling of higher-order harmonic voltages. As compared with ferromagnetic heterostr

SUBMITTER: Cheng Y 

PROVIDER: S-EPMC9237044 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature