  We investigate sequential tunneling transport through a semiconductor double
quantum dot structure by combining a simple microscopic quantum confinement
model with a Mott-Hubbard type correlation model. We calculate
nonperturbatively the evolution of the Coulomb blockade oscillations as a
function of the interdot barrier conductance, obtaining good qualitative
agreement with the experimental data over the whole tunneling regime from the
weak-coupling individual dot to the strong-coupling coherent double-dot
molecular system.
