Galvano- and Thermomagnetic Effects in α-Ag₂Te

Abstract

Nernst coefficient, magnetoresistance, and magnetothermoelectric power together with electrical conductivity, Hall coefficient, and thermoelectric power of α-Ag 2 Te are measured as functions of the e.m.f., E of the galvanic cell Ag|AgI|Ag 2 Te|Pt, where E may be considered to represent the relative position of the Fermi level in the Ag 2 Te specimen. The experimental results exhibit consistent agreement with the Lorentz-Sommerfeld theory for degenerate two-band semiconductors with energy independent mean free paths of carriers. Relative thermal conductivity is also measured, showing minimum at a E value expected from the theory.