Effects of Fermion Flavor on Exciton Condensation in Double Layer Systems

Details Effects of Fermion Flavor on Exciton Condensation in Double Layer Systems Effects of Fermion Flavor on Exciton Condensation in Double Layer Systems

2011-08-31

arxiv.org/abs/1108.6107v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 figures

Scientific paper

We use fermionic path integral quantum Monte Carlo to study the effects of fermion flavor on the physical properties of dipolar exciton condensates in double layer systems. We find that by including spin in the system weakens the effective interlayer interaction strength, yet this has very little effect on the Kosterlitz-Thouless transition temperature. We further find that, to obtain the correct description of screening, it is necessary to account for correlation in both the interlayer and intralayer interactions. We show that while the excitonic binding cannot completely surpress screening by additional fermion flavors, their screening effectiveness is reduced leading to a much higher transition temperatures than predicted with large-N analysis.

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