Effect of annealing on the electrical properties of SnTe crystals

Resumo

We have studied the effect of annealing on the electrical conductivity σ and thermoelectric power α of SnTe crystals. The results indicate that the temperature dependences of σ and α for both the unannealed and annealed SnTe crystals, as well as the effect of annealing on these parameters, are adequately accounted for in terms of a model that considers two valence bands separated by an energy gap.