The Hall effect in liquid alkali amalgams

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Abstract
The Hall coefficient has been measured at room temperature in amalgams of liquid mercury containing up to 5 at. % of sodium and 1·5 at. % of potassium. Contrary to the predictions of the free-electron model, the addition of these impurities produces a significant reduction in the Hall coefficient. This observation casts doubt upon some of the theories put forward to explain the anomalous behaviour of the resistivity in these amalgams. The paper includes new data on the concentration dependence of the resistivity and the density for both amalgams, which confirm the results of previous workers.