1. Trapping Dipolar Exciton Fluids in GaN/(AlGa)N Nanostructures
- Author
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Yvon Cordier, Sébastien Chenot, Benjamin Damilano, Jessica Vives, Thierry Guillet, Maria Vladimirova, Pierre Lefebvre, François Chiaruttini, Benoit Jouault, Christelle Brimont, Laboratoire Charles Coulomb (L2C), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Centre de recherche sur l'hétéroepitaxie et ses applications (CRHEA), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA), ANR-15-CE30-0020,OBELIX,Vers un liquide quantique d'excitons indirects(2015), and ANR-11-LABX-0014,GANEX,Réseau national sur GaN(2011)
- Subjects
Nanostructure ,Materials science ,cooling ,Exciton ,Bioengineering ,Gallium nitride ,02 engineering and technology ,Trapping ,Coulomb-bound but spatially separated electron-hole pairs ,Condensed Matter::Materials Science ,chemistry.chemical_compound ,exciton fluid ,General Materials Science ,[SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics ,Quantum well ,Phase diagram ,Boson ,Condensed Matter::Quantum Gases ,[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] ,Condensed Matter::Other ,gallium nitride Dipolar excitons ,Mechanical Engineering ,General Chemistry ,Condensed Matter::Mesoscopic Systems and Quantum Hall Effect ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Dipole ,chemistry ,Chemical physics ,[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] ,[SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic ,electrostatic traps ,gallium nitride ,0210 nano-technology ,have a long - Abstract
International audience; 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.
- Published
- 2019