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Showing 1–6 of 6 results
Advanced filters: Author: Timothy C. Berkelbach Clear advanced filters

  • 2D electronic spectroscopy found experimental indications of coherently interacting excitons and trions in doped transition metal dichalcogenides (TMDCs). Here, the authors perform simulations of 2D spectra of monolayer TMDCs based on a many-body formalism, allowing to relate exciton-trion coherence to quantum beats based on microscopic principles.

    • Roel Tempelaar
    • Timothy C. Berkelbach
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-7

  • The authors present a material-specific ab initio understanding of doped cuprates. Their method correctly captures two known experimental trends: the pressure effect, where the pairing order and gap increase with intra-layer pressure, and the layer effect, where the pairing order and gap vary with the number of copper-oxygen layers.

    • Zhi-Hao Cui
    • Junjie Yang
    • Garnet Kin-Lic Chan
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-10

  • Strong many-body Coulomb interactions allow for bound two- and three-body excitonic states to form in monolayer transition metal dichalcogenides, but it is now shown that such interactions are strong enough to create four-body biexcitonic states.

    • Yumeng You
    • Xiao-Xiao Zhang
    • Tony F. Heinz
    Research
    Nature Physics
    Volume: 11, P: 477-481

  • Electronic bandgap tuning in semiconductors enables key functionalities in solid-state devices. Here, the authors present a strategy to control the bandgap of atomically thin WS2 and WSe2semiconductors via manipulation of the surrounding dielectric environment rather than by modifications of the materials themselves.

    • Archana Raja
    • Andrey Chaves
    • Alexey Chernikov
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-7

  • Local changes of the Coulomb interaction due to external dielectric environment fluctuations present a new type of disorder in monolayer transition-metal dichalcogenides.

    • Archana Raja
    • Lutz Waldecker
    • Alexey Chernikov
    Research
    Nature Nanotechnology
    Volume: 14, P: 832-837

  • Despite recent progress in the synthesis and characterization of molybdenum disulphide, little is yet known about its microstructure. Using refined chemical vapour deposition synthesis, high-quality crystals of monolayer molybdenum disulphide have now been grown. Single-crystal islands and polycrystals containing tilt and mirror twin grain boundaries are characterized, and the influence of the grain boundaries on the material properties of molybdenum disulphide is assessed.

    • Arend M. van der Zande
    • Pinshane Y. Huang
    • James C. Hone
    Research
    Nature Materials
    Volume: 12, P: 554-561