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

Torben L. Purz; Eric W. Martin; Pasqual Rivera; William G. Holtzmann; Xiaodong Xu; Steven T. Cundiff

doi:10.1103/PhysRevB.104.L241302

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

Mesoscale and Nanoscale Physics 2022-01-05 v1 Materials Science Quantum Physics

Authors: Torben L. Purz , Eric W. Martin , Pasqual Rivera , William G. Holtzmann , Xiaodong Xu , Steven T. Cundiff

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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.

Keywords

excitonic physics in transition metal dichalcogenides excitons in semiconductors transition metal dichalcogenides

Cite

@article{arxiv.2106.03739,
  title  = {Coherent exciton-exciton interactions and exciton dynamics in a MoSe\textsubscript{2}/WSe\textsubscript{2} heterostructure},
  author = {Torben L. Purz and Eric W. Martin and Pasqual Rivera and William G. Holtzmann and Xiaodong Xu and Steven T. Cundiff},
  journal= {arXiv preprint arXiv:2106.03739},
  year   = {2022}
}

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

Abstract

Keywords

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