Study of the RPA pair-correlation function in GaAs-AlGaAs parabolic quantum well wires

The ground state intrasubband pair-correlation function for a quasi-one-dimensional electron gas confined in a GaAs-Al xGa1-xAs parabolic quantum well wire within the Random-Phase Approximation (RPA) is calculated. We have considered two wires with subband energies separation homega = 2:0 meV and homega = 2:5 meV. The dependence of the pair-correlation function on the electronic density was studied and the regions where the RPA approach cannot be used were precisely determined.

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Bibliographic Details
Main Authors: Cunha,J. B. B. da, Cunha,J. F. R. da, Machado,P. C. M., Osório,F. A. P., Borges,A. N.
Format: Digital revista
Language:English
Published: Sociedade Brasileira de Física 2004
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332004000400049
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Description
Summary:The ground state intrasubband pair-correlation function for a quasi-one-dimensional electron gas confined in a GaAs-Al xGa1-xAs parabolic quantum well wire within the Random-Phase Approximation (RPA) is calculated. We have considered two wires with subband energies separation homega = 2:0 meV and homega = 2:5 meV. The dependence of the pair-correlation function on the electronic density was studied and the regions where the RPA approach cannot be used were precisely determined.