326 citations · 1.3k across the 20 of their papers we have counts for
17 papers · 1 filter
Interference dislocations in condensate of indirect excitons
J. R. Leonard, Lunhui Hu, A. A. High +5
Phase singularities in quantum states play a significant role both in the state properties and in the transition between the states. For instance, a transition to two-dimensional s…
Pancharatnam-Berry phase in condensate of indirect excitons
J. R. Leonard, A. A. High, A. T. Hammack +4
We report on the observation of the Pancharatnam-Berry phase in a condensate of indirect excitons (IXs) in a GaAs coupled quantum well structure. The Pancharatnam-Berry phase leads…
Pattern Formation in the Exciton Inner Ring
M. Remeika, A. T. Hammack, S. Poltavtsev +6
We report on the spatially separated pump-probe study of indirect excitons in the inner ring in the exciton emission pattern. A pump laser beam generates the inner ring and a weake…
Spin currents in a coherent exciton gas
A. A. High, A. T. Hammack, J. R. Leonard +8
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 pol…
Spontaneous Coherence in a Cold Exciton Gas
Alexander A. High, Jason R. Leonard, Aaron T. Hammack +5
Excitons, bound pairs of electrons and holes, form a model system to explore the quantum physics of cold bosons in solids. Cold exciton gases can be realized in a system of indirec…
Spin Texture in a Cold Exciton Gas
A. A. High, A. T. Hammack, J. R. Leonard +5
We report on the observation of a spin texture in a cold exciton gas in a GaAs/AlGaAs coupled quantum well structure. The spin texture is observed around the exciton rings. The obs…