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Title: Bose-Einstein condensation of trapped polaritons in two-dimensional electron-hole systems in a high magnetic field

Abstract

The Bose-Einstein condensation (BEC) of magnetoexcitonic polaritons (magnetopolaritons) in two-dimensional (2D) electron-hole system embedded in a semiconductor microcavity in a high magnetic field B is predicted. There are two physical realizations of 2D electron-hole system under consideration: a graphene layer and quantum well (QW). A 2D gas of magnetopolaritons is considered in a planar harmonic potential trap. Two possible physical realizations of this trapping potential are assumed: inhomogeneous local stress or harmonic electric field potential applied to excitons and a parabolic shape of the semiconductor cavity causing the trapping of microcavity photons. The effective Hamiltonian of the ideal gas of cavity polaritons in a QW and graphene in a high magnetic field and the BEC temperature as functions of magnetic field are obtained. It is shown that the effective polariton mass M{sub eff} increases with magnetic field as B{sup 1/2}. The BEC critical temperature T{sub c}{sup (0)} decreases as B{sup -1/4} and increases with the spring constant of the parabolic trap. The Rabi splitting related to the creation of a magnetoexciton in a high magnetic field in graphene and QW is obtained. It is shown that Rabi splitting in graphene can be controlled by the external magnetic field since itmore » is proportional to B{sup -1/4} while in a QW the Rabi splitting does not depend on the magnetic field when it is strong.« less

Authors:
 [1];  [1];  [2]
  1. Physics Department, New York City College of Technology, City University of New York, Brooklyn, New York 11201 (United States)
  2. Institute of Spectroscopy, Russian Academy of Sciences, 142190 Troitsk, Moscow Region (Russian Federation)
Publication Date:
OSTI Identifier:
21294340
Resource Type:
Journal Article
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 80; Journal Issue: 11; Other Information: DOI: 10.1103/PhysRevB.80.115302; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1098-0121
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BOSE-EINSTEIN CONDENSATION; CARBON; CRITICAL TEMPERATURE; ELECTRIC FIELDS; ELECTRON-HOLE COUPLING; EXCITONS; HAMILTONIANS; HARMONIC POTENTIAL; LAYERS; MAGNETIC FIELDS; MASS; NANOSTRUCTURES; PHOTONS; POLARONS; QUANTUM DOTS; QUANTUM WELLS; SEMICONDUCTOR MATERIALS; STRESSES; THIN FILMS; TRAPPING; TRAPS; TWO-DIMENSIONAL CALCULATIONS

Citation Formats

Berman, Oleg L, Kezerashvili, Roman Ya, Graduate School and University Center, City University of New York, New York, New York 10016, and Lozovik, Yurii E. Bose-Einstein condensation of trapped polaritons in two-dimensional electron-hole systems in a high magnetic field. United States: N. p., 2009. Web. doi:10.1103/PHYSREVB.80.115302.
Berman, Oleg L, Kezerashvili, Roman Ya, Graduate School and University Center, City University of New York, New York, New York 10016, & Lozovik, Yurii E. Bose-Einstein condensation of trapped polaritons in two-dimensional electron-hole systems in a high magnetic field. United States. doi:10.1103/PHYSREVB.80.115302.
Berman, Oleg L, Kezerashvili, Roman Ya, Graduate School and University Center, City University of New York, New York, New York 10016, and Lozovik, Yurii E. Tue . "Bose-Einstein condensation of trapped polaritons in two-dimensional electron-hole systems in a high magnetic field". United States. doi:10.1103/PHYSREVB.80.115302.
@article{osti_21294340,
title = {Bose-Einstein condensation of trapped polaritons in two-dimensional electron-hole systems in a high magnetic field},
author = {Berman, Oleg L and Kezerashvili, Roman Ya and Graduate School and University Center, City University of New York, New York, New York 10016 and Lozovik, Yurii E},
abstractNote = {The Bose-Einstein condensation (BEC) of magnetoexcitonic polaritons (magnetopolaritons) in two-dimensional (2D) electron-hole system embedded in a semiconductor microcavity in a high magnetic field B is predicted. There are two physical realizations of 2D electron-hole system under consideration: a graphene layer and quantum well (QW). A 2D gas of magnetopolaritons is considered in a planar harmonic potential trap. Two possible physical realizations of this trapping potential are assumed: inhomogeneous local stress or harmonic electric field potential applied to excitons and a parabolic shape of the semiconductor cavity causing the trapping of microcavity photons. The effective Hamiltonian of the ideal gas of cavity polaritons in a QW and graphene in a high magnetic field and the BEC temperature as functions of magnetic field are obtained. It is shown that the effective polariton mass M{sub eff} increases with magnetic field as B{sup 1/2}. The BEC critical temperature T{sub c}{sup (0)} decreases as B{sup -1/4} and increases with the spring constant of the parabolic trap. The Rabi splitting related to the creation of a magnetoexciton in a high magnetic field in graphene and QW is obtained. It is shown that Rabi splitting in graphene can be controlled by the external magnetic field since it is proportional to B{sup -1/4} while in a QW the Rabi splitting does not depend on the magnetic field when it is strong.},
doi = {10.1103/PHYSREVB.80.115302},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 11,
volume = 80,
place = {United States},
year = {2009},
month = {9}
}