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arXiv · 1009.1420

Supersolidity in electron-hole bilayers with a large density imbalance

Meera M. Parish·Francesca M. Marchetti·Peter B. Littlewood
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Abstract

We consider an electron-hole bilayer in the limit of extreme density imbalance, where we have a single particle in one layer interacting attractively with a Fermi liquid in the other parallel layer. Using an appropriate variational wave function for the dressed exciton, we provide strong evidence for the existence of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) phase in electron-hole bilayers with a large density imbalance. Furthermore, within this unusual limit of FFLO, we find that a dilute gas of minority particles forms excitons that condense into a two-dimensional "supersolid".

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Meera M. Parish, Francesca M. Marchetti, Peter B. Littlewood. 2011-06-07. Supersolidity in electron-hole bilayers with a large density imbalance. https://doi.org/10.1209/0295-5075%2F95%2F27007

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