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Type: Artigo de periódico
Title: Binding energy of charged excitons in semiconductor quantum wells in the presence of longitudinal electric fields
Author: Dacal, LCO
Brum, JA
Abstract: We present variational calculations of the binding energy for positively and negatively charged excitons (trions) in idealized GaAs/Al0.3Ga0.7As quantum wells with parabolic electrons and holes energy dispersions. The configuration interaction method is used with a physically meaningful single-particle basis set. We have shown that the inclusion of more than one electron quantum-well solution in the basis is important to obtain accurate values for the binding energies. The effects of longitudinal electric-field and quantum-well confinement on the charged excitons bound states are studied in the absence of magnetic field and the conditions for the trion ionization are discussed.
Country: EUA
Editor: American Physical Soc
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.65.115324
Date Issue: 2002
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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