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11 papers
Strain Anisotropy Driven Spontaneous Formation of Nanoscrolls from Two-Dimensional Janus Layers
Mohammed Sayyad, Ying Qin, Jan Kopaczek +12
Two-dimensional Janus transition metal dichalcogenides (TMDs) have attracted attention due to their emergent properties arising from broken mirror symmetry and self-driven polarisa…
Nonlinear Dispersion Relation and Out-of-Plane Second Harmonic Generation in MoSSe and WSSe Janus Monolayers
Marko M. Petrić, Viviana Villafañe, Paul Herrmann +9
Janus transition metal dichalcogenides are an emerging class of atomically thin materials with engineered broken mirror symmetry that gives rise to long-lived dipolar excitons, Ras…
Identification of exciton complexes in a charge-tuneable Janus WSeS monolayer
Matthew S. G. Feuer, Alejandro R. -P. Montblanch, Mohammed Sayyad +16
Janus transition-metal dichalcogenide monolayers are fully artificial materials, where one plane of chalcogen atoms is replaced by chalcogen atoms of a different type. Theory predi…
Raman spectrum of Janus transition metal dichalcogenide monolayers WSSe and MoSSe
Marko M. Petrić, Malte Kremser, Matteo Barbone +7
Janus transition metal dichalcogenides (TMDs) lose the horizontal mirror symmetry of ordinary TMDs, leading to the emergence of additional features, such as native piezoelectricity…
Confinement of long-lived interlayer excitons in WS/WSe heterostructures
Alejandro R. -P. Montblanch, Dhiren M. Kara, Ioannis Paradisanos +13
Interlayer excitons in layered materials constitute a novel platform to study many-body phenomena arising from long-range interactions between quantum particles. The ability to loc…
Near-unity light absorption in a monolayer WS2 van der Waals heterostructure cavity
Itai Epstein, Bernat Terrés, André J. Chaves +12
Excitons in monolayer transition-metal-dichalcogenides (TMDs) dominate their optical response and exhibit strong light-matter interactions with lifetime-limited emission. While var…
Optical valley Hall effect for highly valley-coherent exciton-polaritons in an atomically thin semiconductor
Nils Lundt, Lukasz Dusanowski, Evgeny Sedov +11
Spin-orbit coupling is a fundamental mechanism that connects the spin of a charge carrier with its momentum. Likewise, in the optical domain, a synthetic spin-orbit coupling is acc…
Resolving spin, valley, and moiré quasi-angular momentum of interlayer excitons in WSe2/WS2 heterostructures
Chenhao Jin, Emma C. Regan, Danqing Wang +11
Moiré superlattices provide a powerful way to engineer properties of electrons and excitons in two-dimensional van der Waals heterostructures. The moiré effect can be especially st…
Observation of Moiré Excitons in WSe2/WS2 Heterostructure Superlattices
Chenhao Jin, Emma C. Regan, Aiming Yan +10
Moiré superlattices provide a powerful tool to engineer novel quantum phenomena in two-dimensional (2D) heterostructures, where the interactions between the atomically thin layers…
Excitonic Complexes and Emerging Interlayer Electron-Phonon Coupling in BN Encapsulated Monolayer Semiconductor Alloy: WS0.6Se1.4
Yuze Meng, Tianmeng Wang, Zhipeng Li +11
Monolayer transition metal dichalcogenides (TMDs) possess superior optical properties, including the valley degree of freedom that can be accessed through the excitation light of c…
Pressure dependence of direct optical transitions in ReS2 and ReSe2
R. Oliva, M. Laurien, F. Dybala +5
We present an experimental and theoretical study of the electronic band structure of ReS2 and ReSe2 at high hydrostatic pressures. The experiments are performed by photoreflectance…