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Atomically thin MoS₂: a new direct-gap semiconductor.
The electronic properties of ultrathin crystals of molybdenum disulfide consisting of N=1,2,…,6 S-Mo-S monolayers have been investigated by optical spectroscopy. Through characterization byExpand
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Anomalous lattice vibrations of single- and few-layer MoS2.
Molybdenum disulfide (MoS(2)) of single- and few-layer thickness was exfoliated on SiO(2)/Si substrate and characterized by Raman spectroscopy. The number of S-Mo-S layers of the samples wasExpand
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Tightly bound trions in monolayer MoS2.
Two-dimensional (2D) atomic crystals, such as graphene and transition-metal dichalcogenides, have emerged as a new class of materials with remarkable physical properties. In contrast to graphene,Expand
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Performance of monolayer graphene nanomechanical resonators with electrical readout.
The enormous stiffness and low density of graphene make it an ideal material for nanoelectromechanical applications. Here, we demonstrate the fabrication and electrical readout of monolayer grapheneExpand
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Grains and grain boundaries in highly crystalline monolayer molybdenum disulphide.
Recent progress in large-area synthesis of monolayer molybdenum disulphide, a new two-dimensional direct-bandgap semiconductor, is paving the way for applications in atomically thin electronics.Expand
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Spin and pseudospins in layered transition metal dichalcogenides
Understanding the physics of two-dimensional materials beyond graphene is of both fundamental and practical interest. Recent theoretical and experimental advances uncover the interplay between realExpand
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The Optical Resonances in Carbon Nanotubes Arise from Excitons
Optical transitions in carbon nanotubes are of central importance for nanotube characterization. They also provide insight into the nature of excited states in these one-dimensional systems. RecentExpand
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Control of valley polarization in monolayer MoS2 by optical helicity.
Electronic and spintronic devices rely on the fact that free charge carriers in solids carry electric charge and spin. There are, however, other properties of charge carriers that might be exploitedExpand
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Measurement of the optical conductivity of graphene.
Optical reflectivity and transmission measurements over photon energies between 0.2 and 1.2 eV were performed on single-crystal graphene samples on a SiO2 substrate. For photon energies above 0.5 eV,Expand
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A wideband coherent terahertz spectroscopy system using optical rectification and electro‐optic sampling
We present a scheme for exploiting the nonresonant second‐order nonlinearities in electro‐optic media to extend the bandwidth of coherent spectroscopy in the far‐infrared using ultrafast laserExpand
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