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| Format: | Artículo científico |
| Language: | en |
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Sociedade Brasileira de Física
2006
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| Online Access: | https://www.redalyc.org/articulo.oa?id=46436341 |
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Table of Contents:
- Binding Energy and Photoionization Cross-Section in GaAs Quantum Well-Wires and Quantum Dots: Magnetic Field and Hydrostatic Pressure Effects J. D. Correa N. Porras-Montenegro C. A. Duque Física, Astronomía y Matemáticas impurity 1D and 0D GaAs Hydrogenic donor Magnetic field and hydrostatic pressure Using a variational procedure for a hydrogenic donor-impurity we have investigated the influence of an axialmagnetic field and hydrostatic pressure in the binding energy and the impurity-related photoionization crosssectionin 1D and 0D GaAs low dimensional systems. Our results are given as a function of the radius, theimpurity position, the polarization of the photon, the applied magnetic field, the normalized photon energy, andthe hydrostatic pressure. In order to describe the G-X mixing in the Ga1¡xAlxAs layer, we use a phenomenologicalprocedure to describe the variation of the potential barrier that confines the carriers in the GaAs layer.Our results agree with previous theoretical investigations in the limit of atmospheric pressure. We found thatthe binding energy and the photoionization cross-section depend on the size of the structures, the potential wellheight, the hydrostatic pressure, and the magnetic field. 2006 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46436341 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.2A Vol.36