Localized Electron States and Excitons in Heterostructures

摘要: One may suggest a variety of direct and convincing proofs for the validity effective mass approximation in physics semiconductors. Particularly elegant among them is argumentation based on prediction observation hydrogen-like states Coulomb center-bound carriers Wannier-Mott excitons. can say without overstating case that shallow impurity centers excitons has had rebirth with development high-quality heterostructures microscopically thin layers compositional materials. A need been found calculating account superstructure potential, difference between band parameters adjoining layers, etc.