  We report the planar and anomalous Nernst effect in epitaxial thin films of
spin polarized La2/3Sr1/3MnO3. The thermal counterpart of the anomalous Hall
effect in this material (i.e. the anomalous Nernst effect) shows a extreme
sensitivity to any parasitic thermal gradient, resulting in large asymmetric
voltages under small temperature differences. This should be considered when
interpreting the magnitude of the electrical response in nanostructures and
devices that operate under high current densities. Finally, none of the
observed magneto-thermoelectric signals is compatible with the observation of
the Spin Seebeck Effect in this material.
