  Recent advances in tuning the correlated behavior of graphene and
transition-metal dichalcogenides (TMDs) have opened a new frontier in the study
of many-body physics in two dimensions and promise exciting possibilities for
new quantum technologies. An emerging field where these materials have yet to
make a deep impact is the study of antiferromagnetic (AFM) spintronics - a
relatively new research direction that promises technologies that are
insensitive to external magnetic fields, fast switching times, and reduced
crosstalk. In this study we present measurements on the intercalated TMD
Fe1/3NbS2 which exhibits antiferromagnetic ordering below 42K. We find that
current densities on the order of 10^4 A/cm^2 can reorient the magnetic order,
the response of which can be detected in the sample's resistance. This
demonstrates that Fe1/3NbS2 can be used as an antiferromagnetic switch with
electronic "write-in" and "read-out". This switching is found to be stable over
time and remarkably robust to external magnetic fields. Fe1/3NbS2 is a rare
example of an AFM system that exhibits fully electronic switching behavior in
single crystal form, making it appealing for low-power, low-temperature memory
storage applications. Moreover, Fe1/3NbS2 is part of a much larger family of
magnetically intercalated TMDs, some of which may exhibit the switching
behavior at higher temperatures and form a platform from which to build tunable
AFM spintronic devices.
