  We report the observation of the resonant transport in multiwall carbon
nanotubes in a crossed geometry. The resonant transport is manifested by an
asymmetric peak in the differential conductance curve. The observed asymmetric
conductance peak is well explained by Fano resonance originating from the
scattering at the contact region of the two nanotubes. The conductance peak
depends sensitively on the external magnetic field and exhibits
Aharonov-Bohm-type oscillation.
