  At each of the boundaries of the two-dimensional (2D) rectangular conductor
parallel to the electric current there arises a stripe with an electric field
transverse to the current and a 100% electron spin polarization. The two
stripes have opposite spin orientations and opposite directions of electric
fields. The magnitudes of the fields, directly related to the spin current if
the spin relaxation is negligible, are the same. The periphery stripes are
separated by a center-stripe, in which the magnitude and direction of the
electric field depend on the ratio of the skew scattering and side jump spin
currents. The spin polarization is zero on the center-line and reaches +1 or -1
at the boundaries between the central and periphery stripes. Weak relaxation of
the z-component of spin normal to the 2D plane modifies the magnitudes of the
spin polarization and fields, with +1 (-1) spin polarization persisting at the
edges of the sample. Favorable experimental settings, in which the electron
spin relaxation of the z-component of spin is suppressed but the spin current
is not, are discussed.
