Supersolidity in electron-hole bilayers with a large density imbalance

Details Supersolidity in electron-hole bilayers with a large density imbalance Supersolidity in electron-hole bilayers with a large density imbalance

2010-09-07

arxiv.org/abs/1009.1420v2

Europhys. Lett. 95, 27007 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 2 figures

Scientific paper

10.1209/0295-5075/95/27007

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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