  The emission of pure spin currents by mechanical deformations, the
piezospintronic effect, in antiferromagnets is studied. We characterize the
piezospintronic effect in an antiferromagnetic honeycomb monolayer in response
to external strains. It is shown that the strain tensor components can be
evaluated in terms of the spin Berry phase. In addition, we propose an
experimental setup to detect the piezo-spin current generated in the
piezospintronic material through the inverse spin Hall effect. Our results
apply to a wide family of two-dimensional antiferromagnetic materials without
inversion symmetry, such as the transition-metal chalcogenophosphates materials
MPX3 (M=V, Mn; X=S, Se, Te) and NiPSe3.
