CONFINED EXCITONS IN SEMICONDUCTORS - CORRELATION BETWEEN BINDING-ENERGY AND SPECTRAL ABSORPTION SHAPE

Citation
P. Lefebvre et al., CONFINED EXCITONS IN SEMICONDUCTORS - CORRELATION BETWEEN BINDING-ENERGY AND SPECTRAL ABSORPTION SHAPE, Physical review. B, Condensed matter, 52(8), 1995, pp. 5756-5759
Citations number
12
Categorie Soggetti
Physics, Condensed Matter
ISSN journal
01631829
Volume
52
Issue
8
Year of publication
1995
Pages
5756 - 5759
Database
ISI
SICI code
0163-1829(1995)52:8<5756:CEIS-C>2.0.ZU;2-7
Abstract
We calculate excitonic absorption spectra in several types of semicond uctor nanostructures by using an original formalism involving fraction al-dimensional spaces. This compact, analytical formulation predicts a surprising one-to-one mapping between the enhanced exciton Rydberg an d the shape of the spectrum, whatever the physical origin of the confi nement. by all-numerical calculation of the optical susceptibility we check that different systems with identical exciton Rydbergs exhibit n early identical spectra, strikingly close to those given by the fracti onal-dimensional approach.