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|Type:||Artigo de periódico|
|Title:||Exciton diamagnetic shifts in GaAs-Ga1-xAlxAs quantum dots and ultrathin quantum wells|
|Abstract:||A theoretical study of the growth-direction magnetic-field effects on the exciton photoluminescence peak energies in GaAs-Ga1-xAlxAs quantum-dot/ultrathin quantum-well systems is presented. Calculations are performed within the effective-mass approximation and taking into account nonparabolicity effects for both the conduction-band and valence-band effective masses. We use a simple 'QD + ultrathin QW' model heterostructure to mimic the actual physical system, and calculated results for the exciton diamagnetic shifts are found in overall agreement with recent experimental measurements.|
|Editor:||Iop Publishing Ltd|
|Citation:||Journal Of Physics-condensed Matter. Iop Publishing Ltd, v. 19, n. 21, 2007.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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