Gryschyк, А. М., Maкhanets, О. М.
(2005)
The Spectra and Lifetimes of Electrons, Holes, and Excitons in Open Cylindrical Quantum Dots Embedded Into Quantum Wires or Wells.
Ukr. J. Phys., 50 (12).
pp. 13891396.
ISSN 05031265
Abstract
The spectra and lifetimes of an electron, a hole, and an exciton in open cylindrical quantum dots (QDs) embedded into various environments — a cylindrical quantum wire (QW) and a plane quantum well which, in their turn, are located in a massive threedimensional medium — have been studied theoretically. The relevant calculations were carried out in the framework of the effective mass approximation and for a rectangular potential. The analytical expression for the scattering matrix (Smatrix) has been obtained. The real part of the Smatrix pole defines the energy of a quasistationary state, while the imaginary one defines
its halfwidth and, accordingly, the lifetime of a quasiparticle in this state. Numerical calculations of the spectra and lifetimes of an electron, a hole, and an exciton were carried out for nanoheterosystems composed on the basis of semiconductors ¯ HgS and ¯CdS.
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