  Using the tight-binding model and the generalized Green's function formalism,
the effect of quantum interference on the electron transport through the
benzene molecule in a semiconductor/benzene/semiconductor junction is
numerically investigated. We show how the quantum interference sources,
different contact positions and local gate, can control the transmission
characteristics of the electrode/molecule/electrode junction. We also study the
occurrence of anti-resonant states in the transmission probability function
using a simple graphical scheme (introduced in Ref.[Phys. Chem. Chem. Phys,
2011, 13, 1431]) for different geometries of the contacts between the benzene
molecule and semiconductor(silicon and titanium dioxide) electrodes.
