Thermopower anomaly in GdNi2: Spin scattering model versus static entropy model

The thermopower anomaly in the vicinity of the ferromagnetic critical point of GdNi2 has been measured and found to be of the form predicted by the spin disorder scattering model proposed recently by Thomas, Levin, and Parks. These results allow a vivid comparison between the above model and the idea that the anomalous thermopower measures the static electron entropy in metals, which has been recently discussed by Tang, Kitchens, and Craig.