  We present a new type of leptogenesis mechanism based on a two-scalar
split-fermions framework. At high temperatures the bulk scalar vacuum
expectation values (VEVs) vanish and lepton number is strongly violated. Below
some temperature, $T_c$, the scalars develop extra dimension dependent VEVs.
This transition is assumed to proceed via a first order phase transition. In
the broken phase the fermions are localized and lepton number violation is
negligible. The lepton-bulk scalar Yukawa couplings contain sizable CP phases
which induce lepton production near the interface between the two phases. We
provide a qualitative estimation of the resultant baryon asymmetry which agrees
with current observation. The neutrino flavor parameters are accounted for by
the above model with an additional approximate U(1) symmetry.
