Abstract
The Hall coefficient RH of Hg-Ga liquid alloys has been measured, via the Corbino geometry, using Ga as a reference material. Phase separation was avoided by working in the temperature range 490-500K. Disc specimens 1 mm thick were used to ease the problems of preparation and containment. The results have been compared with RH(FE)=-(n mod e mod )-1 which is the value predicted by the free-electron model. It was found that Delta RH/RH(FE)=(RH-RH(FE))/RH(FE) is always negative in the Hg-Ga system, a trend that is observed in other mercury alloys. The authors discuss whether the contribution to RH from skew scattering, caused by spin-orbit interaction, can explain the general behaviour that is found experimentally.
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