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Type: Artigo de periódico
Title: Effect of band anisotropy on electronic structure of PbS, PbSe, and PbTe quantum dots
Author: Tudury, GE
Marquezini, MV
Ferreira, LG
Barbosa, LC
Cesar, CL
Abstract: We have calculated the electronic structure of spherical PbS, PbSe, and PbTe quantum dots using a four-band envelope-function formalism that accounts for band anisotropy. By comparing our results with an analytical calculation that assumes a spherical approximation of the (k) over right arrow.(p) over right arrow Hamiltonian, we show that the effects of band anisotropy are more pronounced for the excited states and increase with the confinement. We also show how the same technique can be applied to ellipsoidal quantum dots.
Country: EUA
Editor: American Physical Soc
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.62.7357
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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