  The fundamental aspects of spin-dependent transport processes and their
interplay with temperature gradients, as given by the spin Seebeck coefficient,
are still largely unexplored and a multitude of contributing factors must be
considered. We used density functional theory together with a Monte-Carlo-based
statistical method to simulate simple nanostructures, such as Co nanowires and
films embedded in a Cu host or in vacuum, and investigated the influence of
spin-disorder scattering on electron transport at elevated temperatures. While
we show that the spin-dependent scattering of electrons due to temperature
induced disorder of the local magnetic moments contributes significantly to the
resistance, thermoelectric and spin-caloric transport coefficients, we also
conclude that the actual magnitude of these effects cannot be predicted,
quantitatively or qualitatively, without such detailed calculations.
