Random potential and modulation of the order parameter of exciton bose-einstein condensate in a ring

S. R. Eric Yang; Q. Han Park; J. Yeo

Random potential and modulation of the order parameter of exciton bose-einstein condensate in a ring

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Abstract

We have studied theoretically the Bose-Einstein condensation (BEC) of two-dimensional excitons in a ring with a small random variation of the effective exciton potential along the circumference. We derive a nonlinear Gross-Pitaevskii equation (GPE) for such a condensate, which is valid even in the presence of a weak magnetic field. For several types of random potentials, our numerical solution of the ground state of the GPE displays a necklace-like structure. This is a consequence of the interplay between the random potential and a strong nonlinear repulsive term in the GPE.

Original language	English
Pages (from-to)	388-394
Number of pages	7
Journal	Laser Physics
Volume	15
Issue number	2
Publication status	Published - 2005 Feb

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Instrumentation
Condensed Matter Physics
Industrial and Manufacturing Engineering

Cite this

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title = "Random potential and modulation of the order parameter of exciton bose-einstein condensate in a ring",

abstract = "We have studied theoretically the Bose-Einstein condensation (BEC) of two-dimensional excitons in a ring with a small random variation of the effective exciton potential along the circumference. We derive a nonlinear Gross-Pitaevskii equation (GPE) for such a condensate, which is valid even in the presence of a weak magnetic field. For several types of random potentials, our numerical solution of the ground state of the GPE displays a necklace-like structure. This is a consequence of the interplay between the random potential and a strong nonlinear repulsive term in the GPE.",

author = "{Eric Yang}, {S. R.} and Park, {Q. Han} and J. Yeo",

year = "2005",

month = feb,

language = "English",

volume = "15",

pages = "388--394",

journal = "Laser Physics",

issn = "1054-660X",

publisher = "Institute of Physics Publishing",

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AU - Eric Yang, S. R.

AU - Park, Q. Han

AU - Yeo, J.

PY - 2005/2

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N2 - We have studied theoretically the Bose-Einstein condensation (BEC) of two-dimensional excitons in a ring with a small random variation of the effective exciton potential along the circumference. We derive a nonlinear Gross-Pitaevskii equation (GPE) for such a condensate, which is valid even in the presence of a weak magnetic field. For several types of random potentials, our numerical solution of the ground state of the GPE displays a necklace-like structure. This is a consequence of the interplay between the random potential and a strong nonlinear repulsive term in the GPE.

AB - We have studied theoretically the Bose-Einstein condensation (BEC) of two-dimensional excitons in a ring with a small random variation of the effective exciton potential along the circumference. We derive a nonlinear Gross-Pitaevskii equation (GPE) for such a condensate, which is valid even in the presence of a weak magnetic field. For several types of random potentials, our numerical solution of the ground state of the GPE displays a necklace-like structure. This is a consequence of the interplay between the random potential and a strong nonlinear repulsive term in the GPE.

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VL - 15

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JO - Laser Physics

JF - Laser Physics

IS - 2

ER -

Random potential and modulation of the order parameter of exciton bose-einstein condensate in a ring

Abstract

ASJC Scopus subject areas

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