Exciton Gas Transport through Nanoconstrictions

An indirect exciton is a bound state of an electron and a hole in spatially separated layers. Two-dimensional indirect excitons can be created optically in heterostructures containing double quantum wells or atomically thin semiconductors. We study theoretically the transmission of such bosonic quas...

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Published inNano letters Vol. 19; no. 8; pp. 5373 - 5379
Main Authors Xu, Chao, Leonard, Jason R, Dorow, Chelsey J, Butov, Leonid V, Fogler, Michael M, Nikonov, Dmitri E, Young, Ian A
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 14.08.2019
Subjects
split gate
Indirect excitons
quantum point contact
ballistic transport
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Summary:An indirect exciton is a bound state of an electron and a hole in spatially separated layers. Two-dimensional indirect excitons can be created optically in heterostructures containing double quantum wells or atomically thin semiconductors. We study theoretically the transmission of such bosonic quasiparticles through nanoconstrictions. We show that the quantum transport phenomena, for example, conductance quantization, single-slit diffraction, two-slit interference, and the Talbot effect, are experimentally realizable in systems of indirect excitons. We discuss similarities and differences between these phenomena and their counterparts in electronic devices.
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ISSN:1530-6984
1530-6992
DOI:10.1021/acs.nanolett.9b01877