Nathan P. Wilson
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View article: Engineering strong correlations in a perfectly aligned dual moiré system
Engineering strong correlations in a perfectly aligned dual moiré system Open
Exotic collective phenomena emerge when bosons strongly interact within a lattice. However, creating a robust and tunable solid-state platform to explore such phenomena has been elusive. Dual moiré systems$-$compromising two Coulomb-couple…
View article: Ten-valley excitonic complexes in charge-tunable monolayer WSe$_2$
Ten-valley excitonic complexes in charge-tunable monolayer WSe$_2$ Open
Excitons dominate the optical response of two-dimensional (2D) semiconductors. Strong interactions produce peculiar excitonic complexes, which provide a testing ground for exciton and quantum many-body theories. Here, we report a hitherto …
View article: Breakdown of the Static Dielectric Screening Approximation of Coulomb Interactions in Atomically Thin Semiconductors
Breakdown of the Static Dielectric Screening Approximation of Coulomb Interactions in Atomically Thin Semiconductors Open
Coulomb interactions in atomically thin materials are remarkably sensitive to variations in the dielectric screening of the environment, which can be used to control exotic quantum many-body phases and engineer exciton potential landscapes…
View article: Gate-tunable Bose-Fermi mixture in a strongly correlated moiré bilayer electron system
Gate-tunable Bose-Fermi mixture in a strongly correlated moiré bilayer electron system Open
Quantum gases consisting of species with distinct quantum statistics, such as Bose-Fermi mixtures, can behave in a fundamentally different way than their unmixed constituents. This makes them an essential platform for studying emergent qua…
View article: Breakdown of the static dielectric screening approximation of Coulomb interactions in atomically thin semiconductors
Breakdown of the static dielectric screening approximation of Coulomb interactions in atomically thin semiconductors Open
Coulomb interactions in atomically thin materials are uniquely sensitive to variations in the dielectric screening of the environment, which can be used to control quasiparticles and exotic quantum many-body phases. A static approximation …
View article: Magneto-Optical Sensing of the Pressure Driven Magnetic Ground States in Bulk CrSBr
Magneto-Optical Sensing of the Pressure Driven Magnetic Ground States in Bulk CrSBr Open
Competition between exchange interactions and magnetocrystalline anisotropy may bring new magnetic states that are of great current interest. An applied hydrostatic pressure can further be used to tune their balance. In this work, we inves…
View article: Magneto-optical sensing of the pressure driven magnetic ground states in bulk CrSBr
Magneto-optical sensing of the pressure driven magnetic ground states in bulk CrSBr Open
Competition between exchange interactions and magnetocrystalline anisotropy may bring new magnetic states that are of great current interest. An applied hydrostatic pressure can further be used to tune their balance. In this work we invest…
View article: Raman scattering signatures of strong spin-phonon coupling in the bulk magnetic van der Waals material CrSBr
Raman scattering signatures of strong spin-phonon coupling in the bulk magnetic van der Waals material CrSBr Open
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View article: Raman scattering signatures of the strong spin-phonon coupling in the bulk magnetic van der Waals material CrSBr
Raman scattering signatures of the strong spin-phonon coupling in the bulk magnetic van der Waals material CrSBr Open
Magnetic excitations in layered magnetic materials that can be thinned down the two-dimensional (2D) monolayer limit are of high interest from a fundamental point of view and for applications perspectives. Raman scattering has played a cru…
View article: Twist-dependent intra- and interlayer excitons in moire MoSe2 homobilayers
Twist-dependent intra- and interlayer excitons in moire MoSe2 homobilayers Open
Optoelectronic properties of van der Waals homostructures can be selectively engineered by the relative twist angle between layers. Here, we study the twist-dependent moire coupling in MoSe2 homobilayers. For small angles, we find a pronou…
View article: Strong light-matter interaction with self-hybridized bound states in the continuum in monolithic van der Waals metasurfaces
Strong light-matter interaction with self-hybridized bound states in the continuum in monolithic van der Waals metasurfaces Open
Photonic bound states in the continuum (BICs) are a standout nanophotonic platform for strong light-matter coupling with transition metal dichalcogenides (TMDCs), but have so far mostly been employed as all-dielectric metasurfaces with adj…
View article: The quantum dynamic range of room temperature spin imaging
The quantum dynamic range of room temperature spin imaging Open
Magnetic resonance imaging of spin systems combines scientific applications in medicine, chemistry and physics. Here, we investigate the pixel-wise coherent quantum dynamics of spins consisting of a 40 by 40 micron sized region of interest…
View article: Unveiling the Zero-Phonon Line of the Boron Vacancy Center by Cavity-Enhanced Emission
Unveiling the Zero-Phonon Line of the Boron Vacancy Center by Cavity-Enhanced Emission Open
Negatively charged boron vacancies (VB-) in hexagonal boron nitride (hBN) exhibit a broad emission spectrum due to strong electron-phonon coupling and Jahn-Teller mixing of electronic states. As such, the direct measurement of the zero-pho…
View article: Field-Dependent Band Structure Measurements in Two-Dimensional Heterostructures
Field-Dependent Band Structure Measurements in Two-Dimensional Heterostructures Open
In electronic and optoelectronic devices made from van der Waals heterostructures, electric fields can induce substantial band structure changes which are crucial to device operation but cannot usually be directly measured. Here, we use sp…
View article: Nano-spectroscopy of excitons in atomically thin transition metal dichalcogenides
Nano-spectroscopy of excitons in atomically thin transition metal dichalcogenides Open
Excitons play a dominant role in the optoelectronic properties of atomically thin van der Waals (vdW) semiconductors. These excitons are amenable to on-demand engineering with diverse controls, including dielectric screening, interlayer hy…
View article: Non-Local Exciton-Photon Interactions in Hybrid High-Q Nanocavities with Embedded hBN-Encapsulated MoS2 Monolayers
Non-Local Exciton-Photon Interactions in Hybrid High-Q Nanocavities with Embedded hBN-Encapsulated MoS2 Monolayers Open
Atomically thin semiconductors can be readily integrated into a wide range of nanophotonic architectures for applications in quantum photonics and novel optoelectronic devices. We report the observation of non-local interactions of \textit…
View article: Strong Coupling and Non-Local Interactions in MoS2 Monolayers Coupled to High-Q Nanocavities
Strong Coupling and Non-Local Interactions in MoS2 Monolayers Coupled to High-Q Nanocavities Open
Atomically thin semiconductors can be readily integrated into a wide range of nanophotonic architectures for applications in quantum photonics and novel optoelectronic devices. We report the observation of non-local interactions of free tr…
View article: Spontaneous Valley Polarization of Interacting Carriers in a Monolayer Semiconductor
Spontaneous Valley Polarization of Interacting Carriers in a Monolayer Semiconductor Open
We report magnetoabsorption spectroscopy of gated WSe_{2} monolayers in high magnetic fields up to 60 T. When doped with a 2D Fermi sea of mobile holes, well-resolved sequences of optical transitions are observed in both σ^{±} circular pol…
View article: Valley Phonons and Exciton Complexes in a Monolayer Semiconductor
Valley Phonons and Exciton Complexes in a Monolayer Semiconductor Open
The coupling between spin, charge, and lattice degrees of freedom plays an important role in a wide range of fundamental phenomena. Monolayer semiconducting transitional metal dichalcogenides have emerged as an outstanding platform for stu…
View article: Atomically Thin CrCl<sub>3</sub>: An In-Plane Layered Antiferromagnetic Insulator
Atomically Thin CrCl<sub>3</sub>: An In-Plane Layered Antiferromagnetic Insulator Open
The recent discovery of magnetism in atomically thin layers of van der Waals (vdW) crystals has created new opportunities for exploring magnetic phenomena in the two-dimensional (2D) limit. In most 2D magnets studied to date, the c-axis is…
View article: Detection of thermodynamic “valley noise” in monolayer semiconductors: Access to intrinsic valley relaxation time scales
Detection of thermodynamic “valley noise” in monolayer semiconductors: Access to intrinsic valley relaxation time scales Open
Using light to “listen” to the noise of electrons, we reveal their intrinsic dynamics in a single semiconducting atomic layer.
View article: Valley Manipulation by Optically Tuning the Magnetic Proximity Effect in WSe<sub>2</sub>/CrI<sub>3</sub> Heterostructures
Valley Manipulation by Optically Tuning the Magnetic Proximity Effect in WSe<sub>2</sub>/CrI<sub>3</sub> Heterostructures Open
Monolayer valley semiconductors, such as tungsten diselenide (WSe2), possess valley pseudospin degrees of freedom that are optically addressable but degenerate in energy. Lifting the energy degeneracy by breaking time-reversal symmetry is …
View article: Giant tunneling magnetoresistance in spin-filter van der Waals heterostructures
Giant tunneling magnetoresistance in spin-filter van der Waals heterostructures Open
An intrinsic magnetic tunnel junction An electrical current running through two stacked magnetic layers is larger if their magnetizations point in the same direction than if they point in opposite directions. These so-called magnetic tunne…