MESOSCOPIC TRANSPORT-PROPERTIES OF COMPOSITE FERMIONS

We have measured the magnetoresistance of quantum wires, junctions and rings near landau filling factor nu=1/2 to search for effects due to composite fermions (CF). We find evidence for semi-classical ballistic effects in the CF which are similar to those seen near zero magnetic field. However, we were not able to observe effects due to the phase c oherence of the CF, even where their analogues were apparent in the el ectron transport. We attribute this to sample inhomogeneity.