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Cavity-control of interlayer excitons in van der Waals heterostructures.

ABSTRACT: Monolayer transition metal dichalcogenides integrated in optical microcavities host exciton-polaritons as a hallmark of the strong light-matter coupling regime. Analogous concepts for hybrid light-matter systems employing spatially indirect excitons with a permanent electric dipole moment in heterobilayer crystals promise realizations of exciton-polariton gases and condensates with inherent dipolar interactions. Here, we implement cavity-control of interlayer excitons in vertical MoSe₂-WSe₂ heterostructures. Our experiments demonstrate the Purcell effect for heterobilayer emission in cavity-modified photonic environments, and quantify the light-matter coupling strength of interlayer excitons. The results will facilitate further developments of dipolar exciton-polariton gases and condensates in hybrid cavity - van der Waals heterostructure systems.

SUBMITTER: Forg M

PROVIDER: S-EPMC6697722 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature

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Cavity-control of interlayer excitons in van der Waals heterostructures.

Förg Michael M Colombier Léo L Patel Robin K RK Lindlau Jessica J Mohite Aditya D AD Yamaguchi Hisato H Glazov Mikhail M MM Hunger David D Högele Alexander A

Nature communications 20190816 1

Monolayer transition metal dichalcogenides integrated in optical microcavities host exciton-polaritons as a hallmark of the strong light-matter coupling regime. Analogous concepts for hybrid light-matter systems employing spatially indirect excitons with a permanent electric dipole moment in heterobilayer crystals promise realizations of exciton-polariton gases and condensates with inherent dipolar interactions. Here, we implement cavity-control of interlayer excitons in vertical MoSe<sub>2</sub ...[more]

PMID: 31420540

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