|Trapping Dipolar Exciton Fluids in GaN/(AlGa)N Nanostructures |
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Ref Arxiv: 1902.02974
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Dipolar excitons oﬀer a rich playground for both design of novel optoelectronic devices and fundamental many-body physics. Wide GaN/(AlGa)N quantum wells host a new and promising realization of dipolar excitons. We demonstrate the in-plane conﬁnement and cooling of these excitons, when trapped in the electrostatic potential created by semitransparent electrodes of various shapes deposited on the sample surface. This result is a prerequisite for the electrical control of the exciton densities and ﬂuxes, as well for studies of the complex phase diagram of these dipolar bosons at low temperature.