Abstract
The process of formation of self-consistent double quantum wells (DQWs) in a wide p-type quantum well in the presence of uniaxial strain is investigated. A feature of p-type systems is the structure of the valence band, which consists of two branches of energy dispersion—light and heavy holes. It is shown that this feature leads to significant splitting of the subbands of symmetric and antisymmetric states, as a result of which it is difficult to form states of the DQW with a vanishingly small tunneling gap; a uniaxial strain, by lifting the degeneracy of the band, suppresses this property, so that the two ground subbands of the size quantization of the DQW remain degenerate to high energies.
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