Spin currents in a coherent exciton gas

Abstract

Spin currents and spin textures are observed in a coherent gas of indirect excitons. Applied magnetic fields bend the spin current trajectories and transform patterns of linear polarization from helical to spiral and patterns of circular polarization from four-leaf to bell-like-with-inversion.

5 pages text, 3 figures + 12 pages supplemental information, 3 movies