In the single-particle picture, superlattices can markedly modify the electronic states at low energy via zone folding. These results advance our understanding of emerging phases in moiré superlattices and point to the importance of interlayer physics. The flattening is accompanied by the opening of a large gap in the spectral function and splitting of the exciton peaks. By comparing short and long wave vector moirés, we find that the electronic structure evolves into a highly localized regime with increasingly flat bands and renormalized effective mass. By combining spatially resolved angle-resolved photoemission spectroscopy with optical spectroscopy, we report the first direct evidence of how strongly correlated phases evolve from a weakly interacting regime in a transition metal dichalcogenide superlattice. However, there is no holistic experimental picture for how superlattices modify electronic structure. Electronic moirés formed in van der Waals heterostructures have proved to be an ideal platform. The search for materials with flat electronic bands continues due to their potential to drive strong correlation and symmetry breaking orders. Sefaattin Tongay, Conceptualization, Funding acquisition, Investigation, Methodology, Project administration, Software, Supervision, Validation, Visualization, Writing - original draft, Writing - review & editing,Įli Rotenberg, Conceptualization, Data curation, Methodology, Project administration, Resources, Software, Supervision,įeng Wang, Conceptualization, Funding acquisition, Project administration, Supervision, Writing - original draft,Īnd Alessandra Lanzara, Conceptualization, Data curation, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Supervision, Validation, Visualization, Writing - original draft, Writing - review & editing Roland Koch, Conceptualization, Investigation, Methodology, Resources, Software, Writing - review & editing, Takashi Taniguchi, Resources, Writing - review & editing,Īaron Bostwick, Data curation, Investigation, Methodology, Project administration, Resources, Software, Supervision, Kenji Watanabe, Resources, Writing - review & editing, Regan, Investigation, Resources,ĭanqing Wang, Investigation, Resources, Validation, Fatuzzo, Formal analysis, Investigation, Writing - review & editing, Iqbal Bakti Utama, Conceptualization, Data curation, Investigation, Methodology, Resources, Validation, Visualization, Writing - original draft, Writing - review & editing,Ĭlaudia G. Stansbury, Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Software, Validation, Visualization, Writing - original draft,
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