Investigation of the Weak‐Field Charge Transport in Semiconducting V 2 −VI 3 Compounds with Trigonal Symmetry II. Interpretation of the Weak‐Field Charge Transport in Sb 2 Te 3 Single Crystals

It is succeeded for the first time to interpret the thermoelectric and galvanomagnetic effects, in terms of a nonparabolic six‐valley one‐valence band model and anisotropic mixed scattering on acoustical phonons and ionized impurities and also the magnitude of thermomagnetic effects and the Lorenz numbers for Sb 2 Te 3 single crystals in dependence on temperature between 100 to 300 K using physical relevant microscopic transport data. By a numerical analysis the effective main axis masses m H ii , the tilt angle of Fermi ellipsoid ϑ, the masses m ⟂ c , m ‖ c , the density of state effective mass m d , the mobilities u ⟂ c , u ‖ c , and the carrier density p tot are calculated. Also the Fermi level E F , the relaxation time factor τ ac 0 , the mixture parameters B H i and theparameter of nonparabolicity β are given. The calculated values are ingood agreement with the corresponding data found by using optical effects at 80 K and 300 K.