  We study theoretically and experimentally the spin pumping signals induced by
the resonance of canted antiferromagnets with Dzyaloshinskii-Moriya interaction
and demonstrate that they can generate easily observable inverse spin-Hall
voltages. Using a bilayer of hematite/heavy metal as a model system, we measure
at room temperature the antiferromagnetic resonance and an associated inverse
spin-Hall voltage, as large as in collinear antiferromagnets. As expected for
coherent spin-pumping, we observe that the sign of the inverse spin-Hall
voltage provides direct information about the mode handedness as deduced by
comparing hematite, chromium oxide and the ferrimagnet Yttrium-Iron Garnet. Our
results open new means to generate and detect spin-currents at terahertz
frequencies by functionalizing antiferromagnets with low damping and canted
moments.
