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Type: Artigo de periódico
Title: Donor 1s-2p Transitions In Doped Gaas-ga1-xalxas Quantum Wells: Effects Of Electric And Magnetic Fields
Author: Latge A.
Porras-Montenegro N.
Oliveira L.E.
Abstract: The effects of both electric and magnetic fields on the transition energies between the 1s-like ground state and 2p excited states of hydrogenic donors in a GaAs-Ga1-xAlxAs quantum well are studied. The effective-mass approximation within a variational scheme is adopted with electric and magnetic fields considered in the growth direction of the heterostructure, and treated directly in the variational calculation. Results for the finite-barrier potential are obtained as functions of both applied fields and for different GaAs-Ga1-xAlxAs quantum-well thicknesses, and compared with available infrared magnetospectroscopy measurements on donor-doped quantum wells. Theoretical results indicate that a detailed study of the intradonor absorption spectra together with a proper consideration of the impurity-doping profile are necessary for a qualitative understanding of the experimental results. © 1995 The American Physical Society.
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.51.2259
Date Issue: 1995
Appears in Collections:Unicamp - Artigos e Outros Documentos

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