Abstract

The Hall effect of a UPt/sub 3/ single crystal has been determined for temperatures from 2-300 K. The total Hall signal is decomposed into the normal and anomalous parts. The anomalous part is very large and positive with a pronounced maximum near 30 K reaching 2.8 x 10/sup -3/ cm/sup 3/ (A s)/sup -1/. The normal part is smaller and negative and corresponds in a one-band model to about one electron per formula unit. The change of sign of the temperature derivative of the anomalous Hall effect is related to the transition into the heavy-fermion state.

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