  We study the Aharonov-Bohm (AB) effect in two-dimensional mesoscopic frame in
hole systems. We show that differing from the AB effect in electron systems,
due to the presence of both the heavy hole and the light hole, the conductances
not only show the normal spin-unresolved AB oscillations, but also become
spin-separated. Some schemes for spin filter based on the abundant interference
characteristics are proposed.
