Coherent exciton-exciton interactions and exciton dynamics in a MoSe\textsubscript{2}/WSe\textsubscript{2} heterostructure

Abstract

Coherent coupling between excitons is at the heart of many-body interactions with transition metal dichalcogenide (TMD) heterostructures as an emergent platform for the investigation of these interactions. We employ multi-dimensional coherent spectroscopy on monolayer MoSe\textsubscript{2}/WSe\textsubscript{2} heterostructures and observe coherent coupling between excitons spatially localized in monolayer MoSe${}_2$ and WSe${}_2$. Through many-body spectroscopy, we further observe the absorption state arising from free interlayer electron-hole pairs. This observation yields a spectroscopic measurement of the interlayer exciton binding energy of about 250 meV.

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Cited by in corpus (7)

• Time-domain observation of interlayer exciton formation and thermalization in a MoSe${}_2$/WSe${}_2$ heterostructure
• Momentum-Resolved Exciton Coupling and Valley Polarization Dynamics in Monolayer WS${}_2$
• Imaging dynamic exciton interactions and coupling in transition metal dichalcogenides
• Rapid multiplex ultrafast nonlinear microscopy for material characterization
• Exciton-exciton Interactions -- A Quantitative Comparison Between Complimentary Phenomenological Models
• Electrically tunable MoSe${}_2$/WSe${}_2$ heterostructure-based quantum dot
• Variational and field-theoretical approach to exciton-exciton interactions and biexcitons in semiconductors