Exciton-exciton interaction and biexciton formation in bilayer systems
arXiv:0811.3318 · doi:10.1103/PhysRevB.79.125308
Abstract
We report quantum Monte Carlo calculations of biexciton binding energies in ideal two-dimensional bilayer systems with isotropic electron and hole masses. We have also calculated exciton-exciton interaction potentials, and pair distribution functions for electrons and holes in bound biexcitons. Comparing our data with results obtained in a recent study using a model exciton-exciton potential [C. Schindler and R. Zimmermann, Phys. Rev. B \textbf{78}, 045313 (2008)], we find a somewhat larger range of layer separations at which biexcitons are stable. We find that individual excitons retain their identity in bound biexcitons for large layer separations.
7 pages, 11 figures, 2 tables
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- Resonant Pairing of Excitons in Semiconductor Heterostructures
- Biexciton Condensation in Electron-hole Doped Hubbard Bilayers -- A Sign-Problem-Free Quantum Monte Carlo Study
- Model of fragmentation of the exciton inner ring in semiconductor quantum wells
- Sign-Free Determinant Quantum Monte Carlo Study of Excitonic Density Orders in a Two-Orbital Hubbard-Kanamori Model
- Optical recombination of biexcitons in semiconductors
- Quadriexcitons and excitonic condensate in a symmetric electron-hole bilayer with valley degeneracy
- Coherent exciton transport in semiconductors
- Vertically-coupled dipolar exciton molecules
- Microscopic theory of polariton-polariton interactions
- Superfluidity of a rarefied gas of electron-hole pairs in a bilayer system
- Exciton condensation in quantum wells. Exciton hydrodynamics. The effect of localized states
- Direct and indirect exciton mixture in double quantum wells
- Striped excitonic (super)solid in anisotropic semiconductors with screened exciton interactions
- Ground and excited states of coupled exciton liquids in electron-hole quadrilayers
- Quadriexciton binding energy in electron-hole bilayers
- Light-enhanced dipolar interactions between exciton polaritons