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Here, the authors develop a predictive, material-specific many-body model for moiré heterostructures of transition metal dichalcogenides that tracks exciton dynamics across time, space, and momentum, fully accounting for the moiré potential and the complex non-parabolic exciton band structure.

Here, the authors demonstrate the electrical tunability of the nonlinear interactions, ultrafast formation and decay dynamics of layer-hybridized excitons in a field-effect device based on natural homobilayer MoS₂.

Bacterial beta-lactamases are responsible for resistance to beta-lactams, the most important family of antibiotics. Here, the authors reveal cyclic boronate inhibitors that are active against both serine- and metallo-beta-lactamases and represent a promising strategy for combined antimicrobial treatments.

Quadrupolar excitons — a superposition of two dipolar excitons with anti-aligned dipole moments — are of great interest for applications in quantum simulations and for the investigation of many-body physics. Here, the authors demonstrate the emergence of quadrupolar excitons in natural MoSe2 homobilayers, whose energy shifts quadratically in electric field.

Dark-field momentum microscopy makes it possible to spatio-temporally and spatio-spectrally resolve the dark-exciton dynamics in a twisted transition metal dichalcogenide heterostructure.

The authors observe that the atomic reconstruction in MoS₂/WSe₂ heterobilayers with large lattice mismatch results in the most significant periodic strain distribution, contributing to the effective localisation of excitons within moiré potential traps at room temperature.

Using short pulses in the terahertz spectral range following optical injection, ultrafast excitation of trions to excitons and free carriers in monolayer MoSe₂ can be realized within picoseconds, advancing nanoscale optoelectronics devices.

Here, the authors combine theory and photoluminescence measurements on WSe₂ bilayers and demonstrate the electrical tunability of the trion energy landscape, by showing that an out-of-plane electric field modifies the energetic ordering of the lowest lying trion states.

Here, the authors report the emergence of dark-excitons in transition-metal-dichalcogenide heterostructures that strongly rely on the stacking sequence, i.e., momentum-dark K-Q excitons located exclusively at the top layer of the heterostructure.

The dipole-dependent propagation of hybrid excitons in a van der Waals heterostructure containing a WSe₂ bilayer is characterized by modulating the layer hybridization and interplay between many-body interactions of excitons with an applied vertical electric field.

Multidimensional time- and angle-resolved photoelectron spectroscopy is used to determine the interlayer exciton formation process, reveal a direct hallmark of the superlattice moiré modification, and reconstruct the real-space wavefunction distribution.

Strain engineering can manipulate the propagation of excitons in atomically thin transition metal dichalcogenides. Here, the authors observe an anti-funnelling behavior, i.e., the exciton photoluminescence moves away from high-strain regions, and attribute it to the dominating role of propagating dark excitons.

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

The crystallographic orientation of monolayers in van der Waals multi-layers controls their electronic and optical properties. Here the authors show how the twist angle affects Coulomb correlations governing the internal structure and the mutual interaction of excitons in homobilayers of WSe₂.

In this Comment, the authors discuss the current status, the challenges, and potential technological impact of exciton transport in transition metal dichalcogenide (TMD) monolayers, lateral and vertical heterostructures as well as moiré excitons in twisted TMD heterostacks.

Single layers of transition metal dichalcogenides are expected to be suitable for a number of applications and by stacking layers of different materials on top of each other (heterostructures) an even richer variety of properties can be explored. To this end the authors theoretically investigate cross material exciton states in a heterostructures of MoSe₂ and WSe₂ layers.