Dimensionality Transformation of Exciton State in Quantum Well With Asymmetrical Barriers
Abstract
In the conditions of 2D-3D dimensionality transformation of one-particle states, the dependence of exciton binding energy E(ex) on asymmetrical well width h has been theoretically studied. It is shown that the contribution of one-particle continuous spectrum to exciton becomes considerable when the inverse exciton Bohr radius 1/(ab) turns out to be comparable with the critical for 2D-3D transformation value of in-plane wave vector k(c). The lack of coincidence between electron and hole k(c) values leads to the complicated shape of E(ex) (h) dependence which has a minimum at intermediate values of h. The minimum value of E(ex) appears to be less than 3D exciton binding energy.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 23, 2000
- Accession Number
- ADP013072
Entities
People
- A. E. Tyurin
- V. V. Kapaev
- Yu. V. Kopaev
Organizations
- Russian Academy of Sciences