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Wigner supersolid of excitons in electron-hole bilayers

Yogesh N. Joglekar·Alexander V. Balatsky·S. Das Sarma
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Abstract

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_sa_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.

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Yogesh N. Joglekar, Alexander V. Balatsky, S. Das Sarma. 2006-12-07. Wigner supersolid of excitons in electron-hole bilayers. https://doi.org/10.1103/physrevb.74.233302

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