90 citations · 276 across the 5 of their papers we have counts for
5 papers
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…
Transport of Indirect Excitons in a Potential Energy Gradient
J. R. Leonard, M. Remeika, M. K. Chu +6
We realized a potential energy gradient - a ramp - for indirect excitons using a shaped electrode at constant voltage. We studied transport of indirect excitons along the ramp and…
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…
Collection of indirect excitons in a diamond-shaped electrostatic trap
A. A. High, A. K. Thomas, G. Grosso +7
We report on the principle and realization of a new trap for excitons -- the diamond electrostatic trap -- which uses a single electrode to create a confining potential for exciton…
Localization and interaction of indirect excitons in GaAs coupled quantum wells
Alexander High, Aaron Hammack, Leonid Butov +4
We introduced an elevated trap technique and exploited it for lowering the effective temperature of indirect excitons. We observed narrow photoluminescence lines which correspond t…