Absorption band shape of combined two-dimensio magnetoexciton-cyclotron resonance

The absorption band shape of the combined optical quantum transition with the creation of a two-dimensional magnetoexciton and with the simultaneous excitation of one back- ground electron between its Landau levels is discussed. The combined magnetoexciton- cyclotron resonance (MECR) quantum transi...

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Autores principales:	Moscalenco, Sveatoslav, Podlesnîi, Ivan, Rusu, Spiridon, Cerbu, Florin, Kiseliova, Elena, Colun, Sergiu, Railean, Oleg, Liberman, Michael
Formato:	article
Lenguaje:	EN
Publicado:	D.Ghitu Institute of Electronic Engineering and Nanotechnologies 2008
Materias:	Physics QC1-999 Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/a8b33e5edf8140de8f84c098d8bfa559
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spelling	oai:doaj.org-article:a8b33e5edf8140de8f84c098d8bfa5592021-11-21T12:07:12ZAbsorption band shape of combined two-dimensio magnetoexciton-cyclotron resonance2537-63651810-648Xhttps://doaj.org/article/a8b33e5edf8140de8f84c098d8bfa5592008-04-01T00:00:00Zhttps://mjps.nanotech.md/archive/2008/article/3808https://doaj.org/toc/1810-648Xhttps://doaj.org/toc/2537-6365The absorption band shape of the combined optical quantum transition with the creation of a two-dimensional magnetoexciton and with the simultaneous excitation of one back- ground electron between its Landau levels is discussed. The combined magnetoexciton- cyclotron resonance (MECR) quantum transitions are described within the frame of the model of two-dimensional electron-hole system in a strong perpendicular magnetic field, taking into account supplementary small concentration of background electrons resident on the lowest Landau level (LLL). The concrete case of magnetoexciton composed by electron and hole on their LLL and the accompanying cyclotron resonance with excitation of the background electron from the LLL to the first excited Landau level is considered. The position of the combined absorption band is shifted in comparison with the frequency of the magnetoexciton band by the frequency of the electron cyclotron resonance. The maximal band width equals the ionization potential l I of the magnetoexciton, because participation of the third particle side by side with the electron-hole pair permits to uncover its entire internal energy spectrum beginning with the bottom of the magnetoexciton band and finishing with its ionization potential. The analytical formulas describing the absorption band shape in the vicinity of these two limiting frequencies were deduced. The numerical calculations on the base of a general formula permitted us to obtain a full band shape, which has a monotonic decreasing form with a maximal value near the frequency corresponding to the bottom of the magnetoexciton band and tends linearly to zero near the second limiting frequency corresponding to the ionization of magnetoexciton. This band shape is completely different from the case of the combined exciton-cyclotron resonance quantum transitions with participation of the two-dimensional Wannier-Mott exciton in quantum well structures revealed and discussed in references [1, 2]. Moscalenco, SveatoslavPodlesnîi, IvanRusu, SpiridonCerbu, FlorinKiseliova, ElenaColun, SergiuRailean, OlegLiberman, MichaelD.Ghitu Institute of Electronic Engineering and NanotechnologiesarticlePhysicsQC1-999ElectronicsTK7800-8360ENMoldavian Journal of the Physical Sciences, Vol 7, Iss 2, Pp 197-207 (2008)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronics TK7800-8360
spellingShingle	Physics QC1-999 Electronics TK7800-8360 Moscalenco, Sveatoslav Podlesnîi, Ivan Rusu, Spiridon Cerbu, Florin Kiseliova, Elena Colun, Sergiu Railean, Oleg Liberman, Michael Absorption band shape of combined two-dimensio magnetoexciton-cyclotron resonance
description	The absorption band shape of the combined optical quantum transition with the creation of a two-dimensional magnetoexciton and with the simultaneous excitation of one back- ground electron between its Landau levels is discussed. The combined magnetoexciton- cyclotron resonance (MECR) quantum transitions are described within the frame of the model of two-dimensional electron-hole system in a strong perpendicular magnetic field, taking into account supplementary small concentration of background electrons resident on the lowest Landau level (LLL). The concrete case of magnetoexciton composed by electron and hole on their LLL and the accompanying cyclotron resonance with excitation of the background electron from the LLL to the first excited Landau level is considered. The position of the combined absorption band is shifted in comparison with the frequency of the magnetoexciton band by the frequency of the electron cyclotron resonance. The maximal band width equals the ionization potential l I of the magnetoexciton, because participation of the third particle side by side with the electron-hole pair permits to uncover its entire internal energy spectrum beginning with the bottom of the magnetoexciton band and finishing with its ionization potential. The analytical formulas describing the absorption band shape in the vicinity of these two limiting frequencies were deduced. The numerical calculations on the base of a general formula permitted us to obtain a full band shape, which has a monotonic decreasing form with a maximal value near the frequency corresponding to the bottom of the magnetoexciton band and tends linearly to zero near the second limiting frequency corresponding to the ionization of magnetoexciton. This band shape is completely different from the case of the combined exciton-cyclotron resonance quantum transitions with participation of the two-dimensional Wannier-Mott exciton in quantum well structures revealed and discussed in references [1, 2].
format	article
author	Moscalenco, Sveatoslav Podlesnîi, Ivan Rusu, Spiridon Cerbu, Florin Kiseliova, Elena Colun, Sergiu Railean, Oleg Liberman, Michael
author_facet	Moscalenco, Sveatoslav Podlesnîi, Ivan Rusu, Spiridon Cerbu, Florin Kiseliova, Elena Colun, Sergiu Railean, Oleg Liberman, Michael
author_sort	Moscalenco, Sveatoslav
title	Absorption band shape of combined two-dimensio magnetoexciton-cyclotron resonance
title_short	Absorption band shape of combined two-dimensio magnetoexciton-cyclotron resonance
title_full	Absorption band shape of combined two-dimensio magnetoexciton-cyclotron resonance
title_fullStr	Absorption band shape of combined two-dimensio magnetoexciton-cyclotron resonance
title_full_unstemmed	Absorption band shape of combined two-dimensio magnetoexciton-cyclotron resonance
title_sort	absorption band shape of combined two-dimensio magnetoexciton-cyclotron resonance
publisher	D.Ghitu Institute of Electronic Engineering and Nanotechnologies
publishDate	2008
url	https://doaj.org/article/a8b33e5edf8140de8f84c098d8bfa559
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Absorption band shape of combined two-dimensio magnetoexciton-cyclotron resonance

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