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Tunable properties of excitons in double monolayer semiconductor heterostructures
Luiz G. M. Tenório, Teldo A. S. Pereira, K. Mohseni +4
We studied the exciton properties in double layers of transition metal dichalcogenides (TMDs) with a dielectric spacer between the layers. We developed a method based on an expansi…
Flattening conduction and valence bands for interlayer excitons in a moiré MoS/WSe heterobilayer
Sara Conti, Andrey Chaves, Tribhuwan Pandey +4
We explore the flatness of conduction and valence bands of interlayer excitons in MoS/WSe van der Waals heterobilayers, tuned by interlayer twist angle, pressure, and exter…
Distinctive g-factor of moire-confined excitons in van der Waals heterostructures
Y. Galvão Gobato, C. Serati de Brito, Andrey Chaves +7
We investigated experimentally the valley Zeeman splitting of excitonic peaks in the photoluminescence (PL) spectra of high-quality hBN/WS2/MoSe2/hBN heterostructures at near-zero…
Prediction of hyperbolic exciton-polaritons in monolayer black phosphorus
Fanjie Wang, Chong Wang, Andrey Chaves +8
Hyperbolic polaritons exhibit large photonic density of states and can be collimated in certain propagation directions. The majority of hyperbolic polaritons are sustained in man-m…
Tunable coupling of terahertz Dirac plasmons and phonons in transition metal dicalchogenide-based van der Waals heterostructures
I. R. Lavor, Andrey Chaves, F. M. Peeters +1
Dirac plasmons in graphene hybridize with phonons of transition metal dichalcogenides (TMDs) when the materials are combined in so-called van der Waals heterostructures (vdWh), thu…
Tunable effective masses of magneto-excitons in two-dimensional materials
Andrey Chaves, F. M. Peeters
Excitonic properties of GeH and SnH, also known as Xanes, are investigated within the effective mass model. A perpendicularly applied magnetic field induces a negat…