Premium
Magnetooptical Investigation of Hg 1− x Cd x Te Mixed Crystals. I. Semimetallic Configuration
Author(s) -
Guldner Y.,
Rigaux C.,
Mycielski A.,
Couder Y.
Publication year - 1977
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.2220810225
Subject(s) - condensed matter physics , crystal (programming language) , physics , spectroscopy , acceptor , faraday effect , faraday cage , resonance (particle physics) , matrix element , materials science , atomic physics , magnetic field , quantum mechanics , particle physics , computer science , programming language
Submillimeter resonance spectroscopy and interband magneto‐absorption are applied to the investigation of the Hg 1 − x Cd x Te alloys system in the range of composition x < 0.3. Magneto‐transmission measurements are performed at 4.2 K up to 60 kG in both the spectral regions (ħω < 16 meV and ħω > 120 meV), on identical unoriented samples, in the Faraday and Voigt geometries. Magnetooptical data are analyzed using the virtual crystal approximation. All interband and intraband magnetooptical transitions are interpreted in terms of Γ 6 and Γ 8 Landau levels described by the Pidgeon and Brown model. The Kane matrix element, the interaction gap, and the Luttinger parameters are determined for each alloy composition from the comparison between theory and experiments. Magnetooptics also provide information on the evolution of the resonant acceptor states with the composition.