期刊
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
卷 46, 期 -, 页码 274-278出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physe.2012.10.005
关键词
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In this paper the direct interband light absorption in cylindrical quantum dot with modified Poschl-Teller potential made of GaAs is studied. For the regime of strong size quantization analytical expressions for the particle energy spectrum, absorption coefficient and dependencies of effective threshold frequencies of absorption on the geometrical sizes of quantum dot are obtained. The selection rules corresponding to different transitions between quantum levels are found. To facilitate the comparison of obtained results with the probable experimental data, size dispersion distribution of growing quantum dots by the geometrical sizes using two experimentally realizing distribution functions has been taken into account. Distribution functions of Lifshits-Slezov and Gaussian have been considered. (c) 2012 Elsevier B.V. All rights reserved.
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