Magneto-absorption in cylindrical quantum dots
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- Atayan, A.K., Kazaryan, E.M., Meliksetyan, A.V. et al. Eur. Phys. J. B (2008) 63: 485. doi:10.1140/epjb/e2008-00247-1
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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.