Half-vortices in polariton condensates

Details Half-vortices in polariton condensates Half-vortices in polariton condensates

2007-04-20

arxiv.org/abs/0704.2721v2

Phys. Rev. Lett. 99, 106401 (2007)

Physics

Condensed Matter

Other Condensed Matter

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.99.106401

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 half-vortex and the polarization becomes fully circular in the core center.

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