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Title: Theory of Bose-Einstein condensation and superfluidity of two-dimensional polaritons in an in-plane harmonic potential

Abstract

Recent experiments have shown that it is possible to create an in-plane harmonic potential trap for a two-dimensional (2D) gas of exciton polaritons in a microcavity structure, and evidence has been reported of Bose-Einstein condensation of polaritons accumulated in this type of trap. We present here the theory of Bose-Einstein condensation (BEC) and superfluidity of the exciton polaritons in a harmonic potential trap. Along the way, we determine a general method for defining the superfluid fraction in a 2D trap, in terms of angular momentum representation. We show that in the continuum limit, as the trap becomes shallower, the superfluid fraction approaches the 2D Kosterlitz-Thouless limit, while the condensate fraction approaches zero, as expected.

Authors:
 [1];  [2];  [3]
  1. Physics Department, New York City College of Technology of the City University of New York, 300 Jay Street, Brooklyn, New York 11201 (United States)
  2. Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow Region 142190 (Russian Federation)
  3. Department of Physics and Astronomy, University of Pittsburgh, 3941 O'Hara Street, Pittsburgh, Pennsylvania 15260 (United States)
Publication Date:
OSTI Identifier:
21143282
Resource Type:
Journal Article
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 77; Journal Issue: 15; Other Information: DOI: 10.1103/PhysRevB.77.155317; (c) 2008 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; ANGULAR MOMENTUM; BOSE-EINSTEIN CONDENSATION; CONDENSATES; EXCITONS; HARMONIC POTENTIAL; POLARONS; SUPERFLUIDITY; TRAPS; TWO-DIMENSIONAL CALCULATIONS

Citation Formats

Berman, Oleg L, Lozovik, Yurii E, and Snoke, David W. Theory of Bose-Einstein condensation and superfluidity of two-dimensional polaritons in an in-plane harmonic potential. United States: N. p., 2008. Web. doi:10.1103/PHYSREVB.77.155317.
Berman, Oleg L, Lozovik, Yurii E, & Snoke, David W. Theory of Bose-Einstein condensation and superfluidity of two-dimensional polaritons in an in-plane harmonic potential. United States. doi:10.1103/PHYSREVB.77.155317.
Berman, Oleg L, Lozovik, Yurii E, and Snoke, David W. Tue . "Theory of Bose-Einstein condensation and superfluidity of two-dimensional polaritons in an in-plane harmonic potential". United States. doi:10.1103/PHYSREVB.77.155317.
@article{osti_21143282,
title = {Theory of Bose-Einstein condensation and superfluidity of two-dimensional polaritons in an in-plane harmonic potential},
author = {Berman, Oleg L and Lozovik, Yurii E and Snoke, David W},
abstractNote = {Recent experiments have shown that it is possible to create an in-plane harmonic potential trap for a two-dimensional (2D) gas of exciton polaritons in a microcavity structure, and evidence has been reported of Bose-Einstein condensation of polaritons accumulated in this type of trap. We present here the theory of Bose-Einstein condensation (BEC) and superfluidity of the exciton polaritons in a harmonic potential trap. Along the way, we determine a general method for defining the superfluid fraction in a 2D trap, in terms of angular momentum representation. We show that in the continuum limit, as the trap becomes shallower, the superfluid fraction approaches the 2D Kosterlitz-Thouless limit, while the condensate fraction approaches zero, as expected.},
doi = {10.1103/PHYSREVB.77.155317},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 15,
volume = 77,
place = {United States},
year = {2008},
month = {4}
}