Excitonic condensation in spatially separated one-dimensional systems
arXiv:1408.7065 · doi:10.1063/1.4921792
Abstract
We show theoretically that excitons can form from spatially separated one-dimensional ground state populations of electrons and holes, and that the resulting excitons can form a quasicondensate. We describe a mean-field Bardeen-Cooper-Schrieffer theory in the low carrier density regime and then focus on the core-shell nanowire giving estimates of the size of the excitonic gap for InAs/GaSb wires and as a function of all the experimentally relevant parameters. We find that optimal conditions for pairing include small overlap of the electron and hole bands, large effective mass of the carriers, and low dielectric constant of the surrounding media. Therefore, one-dimensional systems provide an attractive platform for the experimental detection of excitonic quasicondensation in zero magnetic field.
arXiv comment4 pages, 3 figures, RevTeX
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Cited by in corpus (6)
- Transport studies of electron-hole and spin-orbit interaction in GaSb/InAsSb core-shell nanowire quantum dots
- Growth and Strain Relaxation Mechanisms of InAs/InP/GaAsSb Core-Dual-Shell Nanowires
- Topological energy gaps in the [111]-oriented InAs/GaSb and GaSb/InAs core-shell nanowires
- Large gap electron-hole superfluidity and shape resonances in coupled graphene nanoribbons
- True exciton condensate of one-dimensional electrons through interwire tunneling
- Excitonic gap generation in thin-film topological insulators