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

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arxiv 2106.03739 v1 pith:FKFDSFF5 submitted 2021-06-07 cond-mat.mes-hall cond-mat.mtrl-sciquant-ph

Torben L. Purz , Eric W. Martin , Pasqual Rivera , William G. Holtzmann , Xiaodong Xu , Steven T. Cundiff This is my paper · ORCID
classification cond-mat.mes-hallcond-mat.mtrl-sciquant-ph
keywords coherenttextsubscriptinteractionsmosecouplingexcitonexcitonsheterostructures
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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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