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Signatures of moiré-trapped valley excitons in MoSe2/WSe2 heterobilayers
TLDR
Results suggest that the origin of the observed effects is interlayer excitons trapped in a smooth moiré potential with inherited valley-contrasting physics, and presents opportunities to control two-dimensional moirÉ optics through variation of the twist angle.
Magnetooptics of Exciton Rydberg States in a Monolayer Semiconductor.
TLDR
The strongly field-dependent and distinct energy shifts of the 2s, 3s, and 4s excited neutral excitons permits their unambiguous identification and allows for quantitative comparison with leading theoretical models.
Giant tunneling magnetoresistance in spin-filter van der Waals heterostructures
TLDR
The possibility to push magnetic information storage to the atomically thin limit and CrI3 as a superlative magnetic tunnel barrier for vdW heterostructure spintronic devices is revealed.
Electrical control of 2D magnetism in bilayer CrI3
TLDR
Electrical control of magnetism in a bilayer of CrI3 enables the realization of an electrically driven magnetic phase transition and the observation of the magneto-optical Kerr effect in 2D magnets.
Interlayer valley excitons in heterobilayers of transition metal dichalcogenides
TLDR
Their unique optical properties arising from the underlying valley physics, the strong many-body interactions and electrical control resulting from the electric dipole moment, and the unique effects of a moiré superlattice on the interlayer exciton potential landscape and optical properties are discussed.
Atomically Thin CrCl3: An In-Plane Layered Antiferromagnetic Insulator.
TLDR
It is demonstrated that atomically thin CrCl3 is a layered antiferromagnetic insulator with an easy-plane normal to the c-axis, that is, the polarization is in the plane of each layer and has no preferred direction within it.
Layer-resolved magnetic proximity effect in van der Waals heterostructures
TLDR
A layer-resolved magnetic proximity effect in heterostructures formed by monolayer WSe 2 and bi/trilayer CrI 3 is reported and a way to control proximity effects and probe interfacial magnetic order via van der Waals engineering is revealed.
Visualizing electrostatic gating effects in two-dimensional heterostructures
TLDR
Changes in the electronic states of two-dimensional semiconductor devices resulting from electrical gating can be monitored directly using micrometre-scale angle-resolved photoemission spectroscopy, providing a powerful way to study not only fundamental semiconductor physics, but also intriguing phenomena such as topological transitions5 and many-body spectral reconstructions under electrical control.
Interlayer electronic coupling on demand in a 2D magnetic semiconductor
TLDR
It is shown that the coupling in CrSBr can be changed from switching the magnetic order from antiferromagnetic to ferromagnetic states, and a magnetic approach to engineer electronic and excitonic effects in layered magnetic semiconductors is uncovered.
Probing the Influence of Dielectric Environment on Excitons in Monolayer WSe2: Insight from High Magnetic Fields.
TLDR
The systematic increase of the exciton's size with dielectric screening, and concurrent reduction in binding energy (also inferred from these measurements), is quantitatively compared with leading theoretical models, and demonstrates how exciton properties can be tuned in future 2D optoelectronic devices.
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