  The stripe phases found in correlated oxides can be viewed as an ordering of
the solitons associated with doping the Mott-insulating state. Inspired by the
recent observation that the stripes tilt away from the main axis of the crystal
lattice in the regime x = 1/8, we propose that a new type of stripe phase is
realized in the large doping regime. This new phase should be viewed as a doped
version of the microscopically insulating x = 1/8 stripes. The topological
excitations associated with the extra doping are fractionally charged kinks
along the stripes whose motions make the stripe fluctuate. We argue that the
directional degree of freedom of the kinks might order, causing the stripe
phase to tilt. Quantitative predictions follow for the doping dependence of the
tilt angle, which in turn can be used to determine the fundamental charge
quantum associated with the stripe phase.
