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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| Institution: | (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: | PACS" target="_blank">PACS 71 20 Nr Semiconductor compounds 73 61 Ey III– V semiconductors |
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