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Excited Rydberg States in MoSe2/WSe2 Heterostructures
- Source :
- Viner, J, McDonnell, L P, Ruiz-Tijerina, D, Rivera, P, Xu, X, Fal'ko, V & Smith, D C 2021, ' Excited Rydberg States in MoSe2/WSe2 Heterostructures ', 2 D Materials, vol. 8, no. 3, 035047 . https://doi.org/10.1088/2053-1583/ac0296
- Publication Year :
- 2021
-
Abstract
- The functional form of Coulomb interactions in the transition metal dichalcogenides (TDMs) and other van der Waals solids is critical to many of their unique properties, e.g. strongly-correlated electron states, superconductivity and emergent ferromagnetism. This paper presents measurements of key excitonic energy levels in MoSe2/WSe2 heterostructures. These measurements are obtained from resonance Raman experiments on specific Raman peaks only observed at excited states of the excitons. This data is used to validate a model of the Coulomb potential in these structures which predicts the exciton energies to within ∼5 meV. This model is used to determine the effect of heterostructure formation on the single-particle band gaps of the layers and will have a wide applicability in designing the next generation of more complex TDM structures.
- Subjects :
- Materials science
Mechanical Engineering
General Chemistry
Condensed Matter Physics
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
symbols.namesake
National Graphene Institute
Mechanics of Materials
Excited state
ResearchInstitutes_Networks_Beacons/national_graphene_institute
Rydberg formula
symbols
General Materials Science
Atomic physics
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Viner, J, McDonnell, L P, Ruiz-Tijerina, D, Rivera, P, Xu, X, Fal'ko, V & Smith, D C 2021, ' Excited Rydberg States in MoSe2/WSe2 Heterostructures ', 2 D Materials, vol. 8, no. 3, 035047 . https://doi.org/10.1088/2053-1583/ac0296
- Accession number :
- edsair.doi.dedup.....c13a37b960e1d4ab90752ff612a4a1c8