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|Type:||Artigo de periódico|
|Title:||Density Of Impurity States And Optical Absorption Spectra Associated With Shallow Impurities In Quantum - Well Wires|
|Author:||Porras Montenegro N.|
|Abstract:||The binding energies of shallow donor impurities in cylindrical quantum-well wires are calculated as functions of the well radii and of the donor location in the well for different radii of the wires using a variational procedure within the effective mass approximation. Assuming an homogeneous distribution of impurities inside the well, we have also calculated the density of impurity states as a function of the impurity binding energy and the optical absorption spectra associated with transitions between the n=1 valence subband and the donor impurity band. A comparison with previous theoretical results obtained in the case of quantum wells - in contrast with the present results for cylindrical quantum-well wires - is performed. © 1991.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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