Excitonic condensate and quasiparticle transport in electron-hole bilayer systems
arXiv:cond-mat/0506620 · doi:10.1103/PhysRevB.72.205313
Abstract
Bilayer electron-hole systems undergo excitonic condensation when the distance d between the layers is smaller than the typical distance between particles within a layer. All excitons in this condensate have a fixed dipole moment which points perpendicular to the layers, and therefore this condensate of dipoles couples to external electromagnetic fields. We study the transport properties of this dipolar condensate system based on a phenomenological model which takes into account contributions from the condensate and quasiparticles. We discuss, in particular, the drag and counterflow transport, in-plane Josephson effect, and noise in the in-plane currents in the condensate state which provides a direct measure of the superfluid collective-mode velocity.
arXiv comment7 pages, 3 figures
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- Anomalous Coulomb Drag in Electron-Hole Bilayers due to the Formation of Excitons
- Superfluidity of two- dimensional excitons in flat and harmonic traps
- Spin-Orbit Interactions in Bilayer Exciton-Condensate Ferromagnets
- Vortex matter and generalizations of dipolar superfluidity concept in layered systems
- Coherent exciton transport in semiconductors
- Transport properties of ν=1 quantum Hall bilayers. Phenomenological description
- Designing exciton-condensate Josephson junction in quantum Hall heterostructures
- Electron-hole pair condensation in Graphene/MoS2 heterointerface
- 2D bilayer electron-hole superfluidity with unequal and anisotropic masses