  As current flows through a Pt/Co/Pt trilayer, spin Hall effect induced by
charge current in the Pt layer leads to spin accumulation at the Co/Pt
interfaces. Our experiment and calculation show an indication of the effect of
spin accumulation at the Co/Pt interfaces on anomalous Hall coefficient in the
Pt/Co/Pt sandwich, which depends on the Pt layer thickness and spin diffusion
length in Pt layer. The ratio of the longitudinal current in the Pt cap layer
due to anomalous Hall effect to the injected transverse current in the Co layer
increases with the Pt cap layer thickness.
