Effects of fermion flavor on exciton condensation in double-layer systems

J. Shumway, Matthew J. Gilbert

Research output: Contribution to journalArticlepeer-review

Abstract

We use a fermionic path-integral quantum Monte Carlo framework 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 the effective interlayer interaction strength is weakened, 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 suppress screening by additional fermion flavors, their screening effectiveness is reduced by intralayer correlations leading to much higher transition temperatures than predicted with large-N analysis.

Original languageEnglish (US)
Article number033103
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume85
Issue number3
DOIs
StatePublished - Jan 23 2012

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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