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View article: Silicon nanoantennas for tailoring the optical properties of MoS2 monolayers
Silicon nanoantennas for tailoring the optical properties of MoS2 monolayers Open
Silicon-based dielectric nanoantennas provide an effective platform for engineering light–matter interactions in van der Waals semiconductors. Here, we demonstrate near-field coupling between monolayer MoS2 and silicon nanoantennas arrange…
View article: Thermal assisted transport of biexcitons in monolayer WSe2
Thermal assisted transport of biexcitons in monolayer WSe2 Open
Studies of excitonic transport in transition metal dichalcogenide monolayers have attracted increasing interest in recent years in order to develop nano-optoelectronic devices made with 2D materials. These studies began with low to moderat…
View article: Magnetic imaging under high pressure with a spin-based quantum sensor integrated in a van der Waals heterostructure
Magnetic imaging under high pressure with a spin-based quantum sensor integrated in a van der Waals heterostructure Open
Pressure is a powerful tool for tuning the magnetic properties of van der Waals magnets owing to their weak interlayer bonding. However, local magnetometry measurements under high pressure still remain elusive for this important class of e…
View article: Exciton Formation in Two-Dimensional Semiconductors
Exciton Formation in Two-Dimensional Semiconductors Open
The optical properties of atomically thin semiconductors are dominated by excitons, tightly bound electron-hole pairs, which give rise to particularly rich and remarkable physics. Despite their importance, the microscopic formation mechani…
View article: Exciton Formation in Two-Dimensional Semiconductors
Exciton Formation in Two-Dimensional Semiconductors Open
The optical properties of atomically thin semiconductors are dominated by excitons, tightly bound electron-hole pairs, which give rise to particularly rich and remarkable physics. Despite their importance, the microscopic formation mechani…
View article: Sub 10 nm Nanochannels Enable Directional Quasi Ballistic Exciton Transport over 5 μm at Room Temperature
Sub 10 nm Nanochannels Enable Directional Quasi Ballistic Exciton Transport over 5 μm at Room Temperature Open
Nanoscale potential wells provide a powerful means to engineer energy landscapes in low dimensional materials, enabling control over quantum states, carrier dynamics, and optoelectronic responses. Such confinement governs phenomena includi…
View article: Energy Shifts and Broadening of Excitonic Resonances in Electrostatically Doped Semiconductors
Energy Shifts and Broadening of Excitonic Resonances in Electrostatically Doped Semiconductors Open
Tuning the density of resident electrons or holes in semiconductors through electrostatic doping provides crucial insight into the composition of the many excitonic complexes that are routinely observed as absorption or photoluminescence r…
View article: Spin‐Valley Polarization Control in WSe<sub>2</sub> Monolayers using Photochemical Doping
Spin‐Valley Polarization Control in WSe<sub>2</sub> Monolayers using Photochemical Doping Open
The influence of a photochemical doping method on the spin‐valley polarization degree ( P c ) of excitons in WSe 2 monolayers is reported. By varying the carrier density and transitioning from an excess of electrons (n‐type) to an excess o…
View article: Exciton Self-Trapping in Twisted Hexagonal Boron Nitride homostructures
Exciton Self-Trapping in Twisted Hexagonal Boron Nitride homostructures Open
One of the main interests of 2D materials is their ability to be assembled with many degrees of freedom for tuning and manipulating excitonic properties. There is a need to understand how the structure of the interfaces between atomic laye…
View article: Silicon nanoantennas for tailoring the optical properties of MoS2 monolayers
Silicon nanoantennas for tailoring the optical properties of MoS2 monolayers Open
Silicon-based dielectric nanoantennas provide an effective platform for engineering light-matter interactions in van der Waals semiconductors. Here, we demonstrate near-field coupling between monolayer MoS2 and silicon nanoantennas arrange…
View article: Charge State Tuning of Spin Defects in Hexagonal Boron Nitride
Charge State Tuning of Spin Defects in Hexagonal Boron Nitride Open
Boron vacancies in hexagonal boron nitride (hBN) are among the most extensively studied optically active spin defects in van der Waals crystals, due to their promising potential to develop two-dimensional (2D) quantum sensors. In this lett…
View article: Spin-valley polarization control in WSe$_2$ monolayers using photochemical doping
Spin-valley polarization control in WSe$_2$ monolayers using photochemical doping Open
We report on the influence of a photochemical doping method on the spin-valley polarization degree ($P_{c}$) of excitons in WSe$_2$ monolayers. By varying the carrier density and transitioning from an excess of electrons (n-type) to an exc…
View article: Magnetic imaging under high pressure with a spin-based quantum sensor integrated in a van der Waals heterostructure
Magnetic imaging under high pressure with a spin-based quantum sensor integrated in a van der Waals heterostructure Open
Pressure is a powerful thermodynamic parameter for tuning the magnetic properties of van der Waals magnets owing to their weak interlayer bonding. However, local magnetometry measurements under high pressure still remain elusive for this i…
View article: Exciton Collimation, Focusing and Trapping Using Complex Transition Metal Dichalcogenide Lateral Heterojunctions
Exciton Collimation, Focusing and Trapping Using Complex Transition Metal Dichalcogenide Lateral Heterojunctions Open
Controlling the motion of neutral excitons in optically active media is a mandatory development to enable the conception of advanced circuits and devices for applications in excitronics, quantum photonics, and optoelectronics. Recently, pr…
View article: Energy shifts and broadening of excitonic resonances in electrostatically-doped semiconductors
Energy shifts and broadening of excitonic resonances in electrostatically-doped semiconductors Open
Tuning the density of resident electrons or holes in semiconductors provides crucial insight into the composition of excitonic complexes that are observed as absorption or photoluminescence resonances in optical studies. Moreover, we can c…
View article: Quantum sensing with optically accessible spin defects in van der Waals layered materials
Quantum sensing with optically accessible spin defects in van der Waals layered materials Open
Quantum sensing has emerged as a powerful technique to detect and measure physical and chemical parameters with exceptional precision. One of the methods is to use optically active spin defects within solid-state materials. These defects a…
View article: 2D exciton lensing: collimation, focusing and trapping
2D exciton lensing: collimation, focusing and trapping Open
Controlling the motion of neutral excitons in optically active media is a mandatory development to enable the conception of advanced circuits and devices for applications in excitronics, quantum photonics, and optoelectronics. Recently, a …
View article: Enhanced optical properties of MoSe2 grown by molecular beam epitaxy on hexagonal boron nitride
Enhanced optical properties of MoSe2 grown by molecular beam epitaxy on hexagonal boron nitride Open
Transition metal dichalcogenides (TMDs) like MoSe2 exhibit remarkable optical properties such as intense photoluminescence (PL) in the monolayer form. To date, narrow-linewidth PL is only achieved in micrometer-sized exfoliated TMD flakes …
View article: Influence of Indium Composition on InAlAs QCLs
Influence of Indium Composition on InAlAs QCLs Open
In this work, we explored the impact of indium composition (x) on the structural and optical characteristics of InxAl1-xAs layers within the context of quantum cascade laser (QCL) structures grown on InP (100) substrates using the Metal Or…
View article: Spin-dependent photodynamics of boron-vacancy centers in hexagonal boron nitride
Spin-dependent photodynamics of boron-vacancy centers in hexagonal boron nitride Open
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View article: Brightened emission of dark trions in transition-metal dichalcogenide monolayers
Brightened emission of dark trions in transition-metal dichalcogenide monolayers Open
The optical emission spectra of semiconducting transition-metal dichalcogenide monolayers highlight fascinating recombination processes of charged excitons (trions). When charge tunable WSe$_2$ monolayers are moderately doped with electron…
View article: Exciton self-trapping in twisted hexagonal boron nitride homostructures
Exciton self-trapping in twisted hexagonal boron nitride homostructures Open
One of the main interests of 2D materials is their ability to be assembled with many degrees of freedom for tuning and manipulating excitonic properties. There is a need to understand how the structure of the interfaces between atomic laye…
View article: Spin-dependent photodynamics of boron-vacancy centers in hexagonal boron nitride
Spin-dependent photodynamics of boron-vacancy centers in hexagonal boron nitride Open
The negatively-charged boron vacancy (V$_\text{B}^-$) center in hexagonal boron nitride (hBN) is currently garnering considerable attention for the design of two-dimensional (2D) quantum sensing units. Such developments require a precise u…
View article: Editorial: PRX Embraces the Vibrant Field of 2D Materials
Editorial: PRX Embraces the Vibrant Field of 2D Materials Open
DOI:https://doi.org/10.1103/PhysRevX.14.010001Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the auth…
View article: Large-scale characterization of Cu2O monocrystals via Rydberg excitons
Large-scale characterization of Cu2O monocrystals via Rydberg excitons Open
Rydberg states of excitons can reach microns in size and require extremely pure crystals. We introduce an experimental method for the rapid and spatially-resolved characterization of Rydberg excitons in copper oxide (Cu2O) with sub-micron …