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Vertical screening in doped semiconductor superlattices with intentional disorderстатья
- Авторы: Zvyagin I.P., Ormont M.A.
- Сборник: Proceedings of the 24th International conference on the physics of semiconductors
- Год издания: 1999
- Место издания: World Scientific World Scientific Singapore
- Первая страница: P87
- Последняя страница: P90
- Аннотация: We calculate the energy spectrum of doped semiconductor superlattices with intentional disorder taking account of Coulomb interaction, originated from redistribution of electrons over the quantum wells. Using the density functional theory, we study numerically the effect of screening on vertical disorder, in particular, on the distribution of size quantization levels in these structures. We show that screening gives rise to a shift of the maximum of the level distribution and appreciable decrease of its width; this can produce delocaliяation of electron states that determine vertical conductivity of the structure. The effect of temperature is also discussed.
- Добавил в систему: Ормонт Михаил Александрович