  Antiferromagnetic spintronics offers the potential for higher-frequency
operations compared to ferromagnetic spintronics and improved insensitivity to
magnetic fields. However, previous electrical techniques to detect
antiferromagnetic dynamics have required millimeter-scale samples to achieve
measurable signals. Here we demonstrate direct electrical detection of
antiferromagnetic resonance in devices 1000 times smaller using spin-filter
tunneling in micron-scale PtTe$_2$/bilayer CrSBr/graphite junctions in which
the tunnel barrier is the van der Waals antiferromaget CrSBr. This sample
geometry allows not only efficient detection, but also electrical control of
the antiferromagnetic resonance through spin-orbit torque from the PtTe$_2$
electrode. The ability to efficiently detect and control antiferromagnetic
resonance provides the means to make detailed studies of the physics governing
these high-frequency dynamics and to pursue applications including radiation
sources, modulators, and detectors.
