  Spin crossover (SCO) complexes are highly promising candidates for a myriad
of potential applications in room-temperature electronics; however, as it
stands, establishing a clear connection between their spin-state switching and
transport properties has been far from trivial. In this letter, an effort to
unravel the underlying charge transport mechanism in these SCO complexes, via a
general theory, is made. The theory presented herein is aimed at providing a
unifying picture that explains the widely different trends observed in the
spin-crossover-dependent carrier transport properties in the SCO molecular thin
film systems.
