Magneto-absorption in cylindrical quantum dots |
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| Authors: | A. K. Atayan E. M. Kazaryan A. V. Meliksetyan H. A. Sarkisyan |
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| Affiliation: | (1) Yerevan State University, 1 Alex Manoogian St., Yerevan, 0025, Armenia;(2) Russian-Armenian University, 123 Hovsep Emin St., Yerevan, 0051, Armenia |
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| Abstract: | The absorption of light in an ensemble of non-interacting cylindrical quantum dots in the presence of a magnetic field is discussed using a model consisting of dots with rectangular infinitely-high potential barriers. The ensemble’s absorption coefficient is calculated — as well as the threshold frequency of absorption — as a function of the applied magnetic field and the quantum dot size. Theoretical results are compared with experimental data on magneto-luminescence in an In0.53Ga0.47As/InP cylindrical quantum dot system. In addition, using a perturbation theory framework, the influence of excitonic effects on the behaviour of the electron-hole energetic spectrum of said system is discussed. |
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| Keywords: | KeywordHeading" >PACS 71.20.Nr Semiconductor compounds 73.61.Ey III– V semiconductors |
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