Excitons in novel quantum materials: a Monte Carlo study

En-Ge Wang

doi:10.1117/12.252936

3 October 1996 Excitons in novel quantum materials: a Monte Carlo study

En-Ge Wang

Proceedings Volume 2897, Electro-Optic and Second Harmonic Generation Materials, Devices, and Applications; (1996) https://doi.org/10.1117/12.252936
Event: Photonics China '96, 1996, Beijing, China

Abstract

The exact binding energies of excitons in novel type-II In_1-xGa_xAs/GaSb_1-xAs_y 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.

Citation Download Citation

En-Ge Wang "Excitons in novel quantum materials: a Monte Carlo study", Proc. SPIE 2897, Electro-Optic and Second Harmonic Generation Materials, Devices, and Applications, (3 October 1996); https://doi.org/10.1117/12.252936

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