Thermal Conductivity of Pure Indium

The thermal conductivity of a pure indium specimen was measured in the normal and superconducting states in the range of temperatures 1.3-4.2°K. In the normal state the specimen showed sizable magnetothermal resistivity effects which were not in agreement with Kohler's rule for thermal conductivity. Near the transition temperature the ratio of conductivities $\frac{K_s}{K_n}$ exhibited the finite slope with temperature characteristic of electronic conduction limited by phonon scattering. The results were compared with a simple model proposed by Kadanoff and Martin and the agreement was found to be good.