On Galvanomagnetic Effects in P-Type Crystals of PbTe

This paper describes measurements of the magnetoresistance and of the planar Hall effect of p -type PbTe crystals; it also describes an interpretation of the electronic band structure of the crystal. The measurements were made at 90°K as a function of the magnetic field strength and of the angle between the magnetic field and the current through the specimen. The coefficients relating to the galvanomagnetic effects were determined from the experimental data. Using these coefficients the electronic band structure of the crystal is shown to be {111} energy spheroids, presumably prolate with a mass ratio of 0.3.