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Proceedings Paper

Excitons in novel quantum materials: a Monte Carlo study
Author(s): En-Ge Wang
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Paper Abstract

The exact binding energies of excitons in novel type-II In1-xGaxAs/GaSb1-xAsy quantum well materials in the effective mass model are evaluated by diffusion quantum Monte Carlo simulations. The results support the experimental interpretation that a stable excitonic ground state can exist in spatially separated electron-hole systems. The electron(hole) correlation effects and quantum confinement are shown to enhance the binding of the excitons. The calculated results for various magnetic fields provide a guide for further experiments in accurate determination of the binding energies, which is important in the optoelectronic application of novel quantum well materials.

Paper Details

Date Published: 3 October 1996
PDF: 7 pages
Proc. SPIE 2897, Electro-Optic and Second Harmonic Generation Materials, Devices, and Applications, (3 October 1996); doi: 10.1117/12.252936
Show Author Affiliations
En-Ge Wang, Institute of Physics (China)

Published in SPIE Proceedings Vol. 2897:
Electro-Optic and Second Harmonic Generation Materials, Devices, and Applications
Manfred Eich; Bruce H. T. Chai; Minhua Jiang, Editor(s)

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