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Direct Determination of Indium Antimonide Energy Band Parameters from Diamagnetic Exciton Spectra
Author(s) -
Kanskaya L. M.,
Kokhanovskii S. I.,
Seysyan K. P.,
Efros Al. L.
Publication year - 1983
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.2221180153
Subject(s) - diamagnetism , exciton , spectral line , indium antimonide , binding energy , electronic band structure , chemistry , atomic physics , condensed matter physics , molecular physics , physics , magnetic field , quantum mechanics , astronomy
Diamagnetic exciton spectra of InSb crystals derived from transmission measurements carried out on thin unstressed samples at 1.8 K and in magnetic fields up to 80 kOe are used for a direct determination of parameters of the c‐ and v‐bands. Detailed identification and precise binding energy calculations permit one to derive the cyclotron frequencies of the electron and the holes, and the spin splittings. The m c * (ϵ c ) and g c * (ϵ c ) relationships thus obtained exhibit good agreement with Kane's model up to energies close to ϵ c ϵ g . Light holes also reveal a strong nonparabolicity characterized in the linear‐in‐ k 4 approximation by the coefficient p 1h = 0.47 meV −1 . An analysis of the splitting of two light‐hole long‐wavelength transitions including the diamagnetic exciton binding energies and the data on the c‐band obtained permits one to calculate the v‐band parameter set.