de Haas–van Alphen Effect in Antimony–Tellurium Alloys

Abstract

The de Haas–van Alphen frequencies, cyclotron masses, and Dingle temperatures of antimony–tellurium alloys with up to 0.11 at. % Te were measured using the low frequency field modulation technique. The hole and electron frequencies decreased and increased respectively, as predicted by the rigid band model. At the highest concentration, the increase is about 25% that of pure Sb and the decrease is about 20%. The cyclotron masses of electrons and holes changed with concentration. This dependence resulted from the nonparabolicity of the Sb bands. Estimates of the Fermi surface volume of the alloys indicated that each Te atom contributes one electron to the alloy. The present results are compared with previous de Haas–van Alphen results on antimony–tin alloys.