Simulations of magnetization reversal in FM/AFM bilayers with THz frequency pulses.

ABSTRACT: It is widely known that antiferromagnets (AFMs) display a high frequency response in the terahertz (THz) range, which opens up the possibility for ultrafast control of their magnetization for next generation data storage and processing applications. However, because the magnetization of the different sublattices cancel, their state is notoriously difficult to read. One way to overcome this is to couple AFMs to ferromagnets-whose state is trivially read via magneto-resistance sensors. Here we present conditions, using theoretical modelling, that it is possible to switch the magnetization of an AFM/FM bilayer using THz frequency pulses with moderate field amplitude and short durations, achievable in experiments. Consistent switching is observed in the phase diagrams for an order of magnitude

SUBMITTER: Hirst J 

PROVIDER: S-EPMC10382508 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature