Half-vortices in polariton condensates

Abstract

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.

4 pages, 3 figures

References in corpus (3)

• Quantum Degenerate Exciton-Polaritons in Thermal Equilibrium
• Topological defects and the superfluid transition of the $s=1$ spinor condensate in two dimensions
• Response functions and superfluid density in a weakly interacting Bose gas with non-quadratic dispersion

Cited by in corpus (2)

• Quantum-fluid dynamics of microcavity polaritons
• Polarized polariton condensates and coupled XY models