Abstract
A theory for excitons in complex quantum nanostructures with complicated geometries and strong coupling between nanostructures is presented. Effective mass models with screened Coulomb interaction give reasonable ground-state energies for excitons in T-shaped quantum wires, coupled T-quantum wires and quantum dot quantum wells, provided the effects of complex geometry are included. A sizable shift between exciton states in quantum wells and T-shaped wires occurs due to a 40% enhancement in binding energy, confinement in the wire, and significant interwire coupling.
Original language | English |
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Pages (from-to) | 801-804 |
Number of pages | 4 |
Journal | Surface Science |
Volume | 361-362 |
DOIs | |
State | Published - 20 Jul 1996 |
Keywords
- Quantum wells
- Quantum wire nanostructuring
- Semi-empirical models and model calculations
- Semiconductor-semiconductor heterostructures
ASJC Scopus subject areas
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry