  We study the transport of surface electrons on superfluid helium through a
microchannel structure in which the charge flow splits into two branches, one
flowing straight and one turned at 90 degrees. According to Ohm law, an equal
number of charges should flow into each branch. However, when the electrons are
dressed by surface excitations (ripplons) to form polaron-like particles with
sufficiently large effective mass, all the charge follows the straight path due
to momentum conservation. This surface-wave induced transport is analogous to
the motion of electrons coupled to surface acoustic waves in semiconductor
2DEGs.
