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The Bihole in Quantum Well Structures
Author(s) -
Bobrysheva A. I.,
Russu S. S.,
Zaloj V. A.
Publication year - 1987
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.2221430215
Subject(s) - valence (chemistry) , superlattice , oscillator strength , quantization (signal processing) , quantum well , chemistry , condensed matter physics , effective mass (spring–mass system) , quantum , atomic physics , physics , quantum mechanics , laser , spectral line , organic chemistry , computer science , computer vision
Abstract In GaAs–Ga 1− x Al x Asmany quantum well structures or superlattices the top valence subband VB1 of size quantization is heavy‐hole‐like HH1 and the effective mass m 1 is positive. The second valence subband VB2 has a heavy‐hole – HH2 or light‐hole –LH1 character in dependence on the barrier and well layer thicknesses and the composition x . The effective mass m 2 in VB2 is negative and the condition for bihole formation m 1 > ‖ m 2 | is fulfilled. The binding energy of the bihole is calculated. The bihole formation due to light absorption is studied. The oscillator strengths in the cases of inter‐ and intrasubband transitions of holes succeeded by bihole formation are obtained.