  We present a microscopic model on radiation-induced zero resistance states
according to a novel approach: Franck-Condon physics and blockade. Zero
resistance states rise up from radiation-induced magnetoresistance oscillations
when the light intensity is strong enough. The theory starts off with the {\it
radiation-driven electron orbit model} that proposes an interplay of the
swinging nature of the radiation-driven Landau states and the presence of
charged impurity scattering. When the intensity of radiation is high enough it
turns out that the driven-Landau states (vibrational states) involved in the
scattering process are spatially far from each other and the corresponding
electron wave functions do not longer overlap. As a result, it takes place a
drastic suppression of the scattering probability and then current and
magnetoresistance exponentially drop. Finally zero resistance states rise up.
This is an application to magnetotransport in two dimensional electron systems
of the Franck-Condon blockade, based on the Franck-Condon physics which in turn
stems from molecular vibrational spectroscopy.
