Conti, Sara

Croxall, Andrew F.

Hamilton, Alexander R.

Neilson, David

Peeters, Fran\ue7ois

Perali, Andrea

Saberi-Pouya, Samira

Abstract: The experimental parameter ranges needed to generate superfluidity in optical and drag experiments in GaAs double quantum wells are determined using a formalism that includes self-consistent screening of the Coulomb pairing interaction in the presence of the superfluid. The very different electron and hole masses in GaAs make this a particularly interesting system for superfluidity with exotic superfluid phases predicted in the BCS-Bose-Einstein condensation crossover regime. We find that the density and temperature ranges for superfluidity cover the range for which optical experiments have observed indications of superfluidity but that existing drag experiments lie outside the superfluid range. We also show that, for samples with low mobility with no macroscopically connected superfluidity, if the superfluidity survives in randomly distributed localized pockets, standard quantum capacitance measurements could detect these pockets

Experimental conditions for the observation of electron-hole superfluidity in GaAs heterostructures

Abstract

Similar works

Full text

Available Versions

Institutional Repository Universiteit Antwerpen