Model Study of Inhomogeneous Line Broadening in Excitonic Spectra of Quantum Wells |
| G.V. Astakhov, V.P. Kochereshko, V.A. Kosobukin, D.R. Yakovlev A.F. Ioffe Physico-Technical Institute, 194021, St. Petersburg, Russia T. Wojtowicz, G. Karczewski, J. Kossut Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland W. Ossau and G. Landwehr Physikalisches Institut der Universität Würzburg, 97074, Würzburg, Germany |
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| An approach is proposed to estimate separately parameters of homogeneous and inhomogeneous broadenings from an optical reflection line of a quasi-2D exciton. A phenomenological model is proposed to take into account statistically an inhomogeneous broadening of the exciton resonant spectra. The concept is applied to study a modulation-doped heterostructures with a single quantum well CdTe/CdMgTe. From exciton reflection lines taken in a magnetic field the temperature-dependent homogeneous and inhomogeneous broadening parameters as well as the exciton radiative decay rate are measured. |
| DOI: 10.12693/APhysPolA.94.235 PACS numbers: 78.20.Ci, 78.66.-w |