Wigner supersolid of excitons in electron-hole bilayers

Article

关键词: SPATIALLY SEPARATED ELECTRONS;    BOSE-EINSTEIN CONDENSATION;    PHASE-DIAGRAM;    2-DIMENSIONAL ELECTRON;    SYSTEMS;    SUPERCONDUCTIVITY;    TRANSPORT;    MECHANISM;    HELIUM;    STATE;   

DOI  :  10.1103/PhysRevB.74.233302

来源: SCIE

【 摘 要 】

Bilayer electron-hole systems, where carriers in one layer are electrons and carriers in the other are holes, have been actively investigated in recent years with the focus on Bose-Einstein condensation of excitons. This condensation is expected to occur when the layer separation d is much smaller than the interparticle distance r(s)a(B) within each layer. In this Brief Report, we argue for the existence of a state, Wigner supersolid, in which excitons are phase coherent but form a Wigner crystal due to dipolar repulsion. We present the qualitative phase diagram of a bilayer system and discuss properties and possible signatures of the Wigner supersolid phase.

【 授权许可】

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