Eur. Phys. J. B 63, 485-492 (2008)
https://doi.org/10.1140/epjb/e2008-00247-1

Magneto-absorption in cylindrical quantum dots

¹ Yerevan State University, 1 Alex Manoogian St., Yerevan, 0025, Armenia
² Russian-Armenian University, 123 Hovsep Emin St., Yerevan, 0051, Armenia

Corresponding author: ^a shayk@ysu.am

Received: 1 October 2007
Revised: 21 March 2008
Published online: 27 June 2008

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 In_0.53Ga_0.47As/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.