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Free Carrier Magneto‐Optical Effects in the Reststrahlen Region of n‐PbTe
Author(s) -
Burehard H.,
Bauer G.,
Grosse P.,
LopezOtero A.
Publication year - 1976
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220760127
Subject(s) - condensed matter physics , polaron , magnetic field , free carrier , conduction band , materials science , coupling (piping) , dielectric , magneto , thermal conduction , optoelectronics , physics , electron , voltage , quantum mechanics , metallurgy , composite material
Magnetoreflection spectra of n‐PbTe in the wave‐number region 20 to 200 cm −l are measured with magnetic fields up to 16 T. The PbTe expitaxial films grown on BaF 2 and NaCl substrates have rarrier concentrations between 6 × 10 16 and 5 × 10 17 cm −3 . For the PbTe a model‐dielectric function according to Wallace is used, including frequency and magnetic field dependences of the carrier damping and the effective masses. For small magnetic fields the nonparabolicity of the conduction band can be described by a two‐band Kane model. At higher magnetic fields the influence of polaron coupling is observed.