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Half vortices in exciton polariton condensates

It is shown that vortices in linearly polarized polariton condensates in planar semiconductor microcavities carry two winding numbers (k, m). These numbers can be either integer or half-integer simultaneously. Four half-integer vortices (1/2, 1/2), (-1/2, -1/2), (1/2, -1/2), and (-1/2, 1/2) are anis...

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Published in:	Physical review letters 2007-09, Vol.99 (10), p.106401-106401, Article 106401
Main Author:	Rubo, Yuri G
Format:	Article
Language:	English
Subjects:	ANISOTROPY CONDENSATES CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY EXCITONS POLARIZATION SEMICONDUCTOR MATERIALS TRANSITION TEMPERATURE
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description	It is shown that vortices in linearly polarized polariton condensates in planar semiconductor microcavities carry two winding numbers (k, m). These numbers can be either integer or half-integer simultaneously. Four half-integer vortices (1/2, 1/2), (-1/2, -1/2), (1/2, -1/2), and (-1/2, 1/2) are anisotropic, possess the smallest energy, and define the Kosterlitz-Thouless transition temperature. The condensate concentration remains finite within the core of the half vortex and the condensate polarization becomes fully circular in the core center.
doi_str_mv	10.1103/physrevlett.99.106401
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subjects	ANISOTROPY CONDENSATES CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY EXCITONS POLARIZATION SEMICONDUCTOR MATERIALS TRANSITION TEMPERATURE
title	Half vortices in exciton polariton condensates
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