Two-dimensional cavity polaritons under the influence of strong perpendicular magnetic and electric fields

The properties of two-dimensional (2D) cavity polaritons subjected to the action of strong perpendicular magnetic and electric fields giving rise to the Landau quantization (LQ) of the 2D electrons and holes accompanied by the Rashba spin-orbit coupling (RSOC) and by the Zeeman splitting (ZS) have...

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Autores principales:	Moscalenco, Sveatoslav, Podlesnîi, Igor, Dumanov, Evgheni, Shutova (Gherciu), Liudmila, Leleacov, Igor
Formato:	article
Lenguaje:	EN
Publicado:	D.Ghitu Institute of Electronic Engineering and Nanotechnologies 2015
Materias:	Physics QC1-999 Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/d1b45e0313b34708ab8da12768690e88
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spelling	oai:doaj.org-article:d1b45e0313b34708ab8da12768690e882021-11-21T11:58:34ZTwo-dimensional cavity polaritons under the influence of strong perpendicular magnetic and electric fields535.421+535.56+537.6/82537-63651810-648Xhttps://doaj.org/article/d1b45e0313b34708ab8da12768690e882015-11-01T00:00:00Zhttps://mjps.nanotech.md/archive/2015/article/43392https://doaj.org/toc/1810-648Xhttps://doaj.org/toc/2537-6365 The properties of two-dimensional (2D) cavity polaritons subjected to the action of strong perpendicular magnetic and electric fields giving rise to the Landau quantization (LQ) of the 2D electrons and holes accompanied by the Rashba spin-orbit coupling (RSOC) and by the Zeeman splitting (ZS) have been investigated. A strong magnetic field, where the electron and the hole cyclotron energy frequencies are greater than the binding energy of the 2D Wannier-Mott excitons, completely reconstructs it transforming into a magnetoexciton, the structure of which is determined by the Lorentz force rather than by the Coulomb electronhole (eh) interaction. We predict drastic changes in the optical properties of the cavity polaritons including those in the state of Bose-Einstein condensation. The main of them is the existence of a multitude of the polariton energy levels closely adjacent on the energy scale, their origin being related with the LQ of the electrons and holes. Most of these levels exhibit nonmonotonous dependences on magnetic field strength B with overlapping and intersections. More so, the selection rules for the band-to-band optical quantum transitions, as well as the quantum transitions from the ground state of the crystal to the magnetoexciton states, essentially depend on numbers ne and nh of the LQ levels of the eh pair forming the magnetoexciton. By slowly changing the external magnetic and electric fields, it is possible to change the lowest polariton energy level, its oscillator strength, the probability of the quantum transition, and the Rabi frequency of the polariton dispersion law. They depend on the relation between numbers ne and nh and can lead to dipole-active, quadrupole-active, or forbidden optical transitions. Our results are based on the exact solutions for the eigenfunctions and the eigenvalues of the Pauli-type Hamilonian with third order chirality terms and a nonparabolic dispersion law for heavy-holes and with first order chirality terms for electrons. They were obtained using the method proposed by Rashba [1]. We expect that these results will also determine the collective behavior of the cavity polaritons, for example, in the GaAs-type quantum wells embedded into a microcavity, which have recently revealed the phenomenon of the Bose-Einstein condensation in the state of the thermodynamic quasi-equilibrium but in the absence of a strong perpendicular magnetic field. Moscalenco, SveatoslavPodlesnîi, IgorDumanov, EvgheniShutova (Gherciu), LiudmilaLeleacov, IgorD.Ghitu Institute of Electronic Engineering and NanotechnologiesarticlePhysicsQC1-999ElectronicsTK7800-8360ENMoldavian Journal of the Physical Sciences, Vol 14, Iss 1-2, Pp 73-95 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronics TK7800-8360
spellingShingle	Physics QC1-999 Electronics TK7800-8360 Moscalenco, Sveatoslav Podlesnîi, Igor Dumanov, Evgheni Shutova (Gherciu), Liudmila Leleacov, Igor Two-dimensional cavity polaritons under the influence of strong perpendicular magnetic and electric fields
description	The properties of two-dimensional (2D) cavity polaritons subjected to the action of strong perpendicular magnetic and electric fields giving rise to the Landau quantization (LQ) of the 2D electrons and holes accompanied by the Rashba spin-orbit coupling (RSOC) and by the Zeeman splitting (ZS) have been investigated. A strong magnetic field, where the electron and the hole cyclotron energy frequencies are greater than the binding energy of the 2D Wannier-Mott excitons, completely reconstructs it transforming into a magnetoexciton, the structure of which is determined by the Lorentz force rather than by the Coulomb electronhole (eh) interaction. We predict drastic changes in the optical properties of the cavity polaritons including those in the state of Bose-Einstein condensation. The main of them is the existence of a multitude of the polariton energy levels closely adjacent on the energy scale, their origin being related with the LQ of the electrons and holes. Most of these levels exhibit nonmonotonous dependences on magnetic field strength B with overlapping and intersections. More so, the selection rules for the band-to-band optical quantum transitions, as well as the quantum transitions from the ground state of the crystal to the magnetoexciton states, essentially depend on numbers ne and nh of the LQ levels of the eh pair forming the magnetoexciton. By slowly changing the external magnetic and electric fields, it is possible to change the lowest polariton energy level, its oscillator strength, the probability of the quantum transition, and the Rabi frequency of the polariton dispersion law. They depend on the relation between numbers ne and nh and can lead to dipole-active, quadrupole-active, or forbidden optical transitions. Our results are based on the exact solutions for the eigenfunctions and the eigenvalues of the Pauli-type Hamilonian with third order chirality terms and a nonparabolic dispersion law for heavy-holes and with first order chirality terms for electrons. They were obtained using the method proposed by Rashba [1]. We expect that these results will also determine the collective behavior of the cavity polaritons, for example, in the GaAs-type quantum wells embedded into a microcavity, which have recently revealed the phenomenon of the Bose-Einstein condensation in the state of the thermodynamic quasi-equilibrium but in the absence of a strong perpendicular magnetic field.
format	article
author	Moscalenco, Sveatoslav Podlesnîi, Igor Dumanov, Evgheni Shutova (Gherciu), Liudmila Leleacov, Igor
author_facet	Moscalenco, Sveatoslav Podlesnîi, Igor Dumanov, Evgheni Shutova (Gherciu), Liudmila Leleacov, Igor
author_sort	Moscalenco, Sveatoslav
title	Two-dimensional cavity polaritons under the influence of strong perpendicular magnetic and electric fields
title_short	Two-dimensional cavity polaritons under the influence of strong perpendicular magnetic and electric fields
title_full	Two-dimensional cavity polaritons under the influence of strong perpendicular magnetic and electric fields
title_fullStr	Two-dimensional cavity polaritons under the influence of strong perpendicular magnetic and electric fields
title_full_unstemmed	Two-dimensional cavity polaritons under the influence of strong perpendicular magnetic and electric fields
title_sort	two-dimensional cavity polaritons under the influence of strong perpendicular magnetic and electric fields
publisher	D.Ghitu Institute of Electronic Engineering and Nanotechnologies
publishDate	2015
url	https://doaj.org/article/d1b45e0313b34708ab8da12768690e88
work_keys_str_mv	AT moscalencosveatoslav twodimensionalcavitypolaritonsundertheinfluenceofstrongperpendicularmagneticandelectricfields AT podlesniiigor twodimensionalcavitypolaritonsundertheinfluenceofstrongperpendicularmagneticandelectricfields AT dumanovevgheni twodimensionalcavitypolaritonsundertheinfluenceofstrongperpendicularmagneticandelectricfields AT shutovagherciuliudmila twodimensionalcavitypolaritonsundertheinfluenceofstrongperpendicularmagneticandelectricfields AT leleacovigor twodimensionalcavitypolaritonsundertheinfluenceofstrongperpendicularmagneticandelectricfields
_version_	1718419332555341824

Two-dimensional cavity polaritons under the influence of strong perpendicular magnetic and electric fields

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