  We investigate spin-dependent electron transfer in the presence of a
Duschinskii rotation. In particular, we propagate dynamics for a two-level
model system for which spin-orbit coupling introduces an interstate coupling of
the form $e^{iWx}$, which is both position(x)-dependent and complex-valued. We
demonstrate that two-level systems coupled to Brownian oscillators with
Duschinskii rotations (and thus entangled normal modes) can produce marked
increases in transient spin polarization relative to two-level systems coupled
to simple shifted harmonic oscillators. These conclusions should have
significant relevance for modeling the effect of nuclear motion on chiral
induced spin selectivity.
