Thermo-Electricity at Low Temperatures. IV. Variation of Thermo-Electric Power in a Magnetic Field

We have made experiments on the variation of thermo-electric power of pure sodium and copper and alloys of copper at low temperatures in a magnetic field. The variation in the pure metals is very small and in the case of sodium is qualitatively and quantitatively at variance with theory. The experiments on the alloys are well interpreted in terms of magneto-resistive behaviour and show that the anomalous scattering in copper + iron and copper + tin alloys is not affected significantly by a magnetic field.