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|Type:||Artigo de periódico|
|Title:||Effects Of Hydrostatic Pressure And Applied Electric Fields On The Exciton States In Gaas - (ga,al)as Quantum Wells|
|Abstract:||The effects of both hydrostatic pressure and electric fields applied perpendicular to the layers on the direct-exciton states in single GaAs-(Ga,Al)As quantum wells are studied. Theoretical calculations are performed within the variational procedure, in the framework of the effective-mass and non-degenerate parabolic-band approximations. Both heavy- and light-hole exciton energies and corresponding quantum-confined Bohr radii are obtained. The pressure coefficient is also theoretically evaluated and found in good agreement with available experimental measurements. © 2005 Elsevier B.V. All rights reserved.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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