ANOMALIES OF THE MAGNETIC-FIELD DEPENDENCE OF THE GALVANOMAGNETIC COEFFICIENTS IN QUANTIZING MAGNETIC-FIELDS

The components of the conductivity tensor sigma(xx)(B), sigma(xy)(B), and sigma(zz)(B) are calculated numerically as functions of the magnet ic field B and the temperature in the quantum limit, taking into accou nt the degree of degeneracy of the electron gas and the variation of t he ''strongfield'' condition as B is varied. The calculated rho perpen dicular to(B) curves for the transverse magnetoresistivity are qualita tively similar to their experimental counterparts measured for narrow- band-gap (Gd, Hg)Te samples in corresponding fields and temperatures. It is stated that most of the anomalies observed on the experimental r ho perpendicular to,(B) and rho parallel to(B) curves, usually attribu ted to deviations from Adams' theory for the conductivity in quantizin g magnetic fields, are in fact consistent with the theory and can be i nferred directly from it. (C) 1996 American Institute of Physics.