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Diamagnetic excitons and the indium antimonide energy band parameters
Author(s) -
Efros Al. L.,
Kanskaya L. M.,
Kokhanovskii S. I.,
Seisyan R. P.
Publication year - 1982
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.2221140209
Subject(s) - exciton , diamagnetism , indium antimonide , physics , condensed matter physics , electron , electronic band structure , quantum nonlocality , spectral line , atomic physics , magnetic field , quantum mechanics , quantum , quantum entanglement
The oscillatory absorption edge spectrum of InSb crystals exhibiting the discrete structure of the Wannier‐Mott exciton at H 0 is studied at 1.8 K in magnetic fields of up to 80 kOe. The experimental data obtained are analyzed with a computer taking into account the excitonic nature of the phenomenon and the effect on the Landau levels of the nonlocality of potential resulting from the electron—electron exchange interaction. A set of band parameters is presented which provides a minimum discrepancy between the theoretical and experimental spectra of not more than 0.65 meV per datum point: E p 23.42 eV, F − 1.18, N 1 − 0.33, γ 2 36.41, γ 2 15.95, γ 3 16.99, k 15.22, q 0.31, χ 0 17.9. The possible contribution of the higher bands and the reasons for disagreement with other avialable parameters are discussed.