L. Eaves
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View article: Extreme electron–hole drag and negative mobility in the Dirac plasma of graphene
Extreme electron–hole drag and negative mobility in the Dirac plasma of graphene Open
Coulomb drag between adjacent electron and hole gases has attracted considerable attention, being studied in various two-dimensional systems, including semiconductor and graphene heterostructures. Here we report measurements of electron–ho…
View article: Extreme electron-hole drag and negative mobility in the Dirac plasma of graphene
Extreme electron-hole drag and negative mobility in the Dirac plasma of graphene Open
Coulomb drag between adjacent electron and hole gases has attracted considerable attention, being studied in various two-dimensional systems, including semiconductor and graphene heterostructures. Here we report measurements of electron-ho…
View article: High-temperature Brown-Zak oscillations in graphene/hBN moiré field effect transistor fabricated using molecular beam epitaxy
High-temperature Brown-Zak oscillations in graphene/hBN moiré field effect transistor fabricated using molecular beam epitaxy Open
Graphene placed on hexagonal boron nitride (hBN) has received significant interest due to its excellent electrical performance and physics phenomena, such as superlattice Dirac points. Direct molecular beam epitaxy growth of graphene on hB…
View article: THE APPLICATION OF TWO-BEAM PHOTOACOUSTIC SPECTROSCOPY TO STUDY ULTRAVIOLET LIGHT-INDUCED PHOTOCHEMICAL AGEING OF ZnS PHOSPHOR POWDER
THE APPLICATION OF TWO-BEAM PHOTOACOUSTIC SPECTROSCOPY TO STUDY ULTRAVIOLET LIGHT-INDUCED PHOTOCHEMICAL AGEING OF ZnS PHOSPHOR POWDER Open
This paper describes a new application of the photoacoustic (PA) elfectl in the characterization of powdered ZnS(Mn,Cu) which is the active phosphor material in electroluminescence cellsz'5.In addition to applying conventional PAS to obtai…
View article: Thermally stable quantum Hall effect in a gated ferroelectric-graphene heterostructure
Thermally stable quantum Hall effect in a gated ferroelectric-graphene heterostructure Open
The quantum Hall effect is widely used for the investigation of fundamental phenomena, ranging from topological phases to composite fermions. In particular, the discovery of a room temperature resistance quantum in graphene is significant …
View article: Room temperature quantum Hall effect in a gated ferroelectric-graphene heterostructure
Room temperature quantum Hall effect in a gated ferroelectric-graphene heterostructure Open
The quantum Hall effect is widely used for the investigation of fundamental phenomena, ranging from topological phases to composite fermions. In particular, the discovery of a room temperature resistance quantum in graphene is significant …
View article: Graphene FETs with high and low mobilities have universal temperature-dependent properties
Graphene FETs with high and low mobilities have universal temperature-dependent properties Open
We use phenomenological modelling and detailed experimental studies of charge carrier transport to investigate the dependence of the electrical resistivity, ρ , on gate voltage, V g , for a series of monolayer graphene field effect transis…
View article: Exciton and Phonon Radiative Linewidths in Monolayer Boron Nitride
Exciton and Phonon Radiative Linewidths in Monolayer Boron Nitride Open
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View article: Graphene’s non-equilibrium fermions reveal Doppler-shifted magnetophonon resonances accompanied by Mach supersonic and Landau velocity effects
Graphene’s non-equilibrium fermions reveal Doppler-shifted magnetophonon resonances accompanied by Mach supersonic and Landau velocity effects Open
Oscillatory magnetoresistance measurements on graphene have revealed a wealth of novel physics. These phenomena are typically studied at low currents. At high currents, electrons are driven far from equilibrium with the atomic lattice vibr…
View article: Heavy carrier effective masses in van der Waals semiconductor Sn(SeS) revealed by high magnetic fields up to 150 T
Heavy carrier effective masses in van der Waals semiconductor Sn(SeS) revealed by high magnetic fields up to 150 T Open
The SnSe2(1-x)S2x alloy is a van der Waals semiconductor with versatile, tunable electronic properties and prospects for future applications ranging from electronics to thermoelectrics and superconductivity. Its band structure and carrier …
View article: Epitaxy of boron nitride monolayers for graphene-based lateral heterostructures
Epitaxy of boron nitride monolayers for graphene-based lateral heterostructures Open
Monolayers of hexagonal boron nitride (hBN) are grown on graphite substrates using high-temperature molecular beam epitaxy (HT-MBE). The hBN monolayers are observed to grow predominantly from step edges on the graphite surface and exhibit …
View article: Step-flow growth of graphene-boron nitride lateral heterostructures by molecular beam epitaxy
Step-flow growth of graphene-boron nitride lateral heterostructures by molecular beam epitaxy Open
Integration of graphene and hexagonal boron nitride (hBN) into lateral heterostructures has drawn focus due to the ability to broadly engineer the material properties. Hybrid monolayers with tuneable bandgaps have been reported, while the …
View article: Van der Waals SnSe<sub>2(1−</sub><i><sub>x</sub></i><sub>)</sub>S<sub>2</sub><i><sub>x</sub></i> Alloys: Composition‐Dependent Bowing Coefficient and Electron–Phonon Interaction
Van der Waals SnSe<sub>2(1−</sub><i><sub>x</sub></i><sub>)</sub>S<sub>2</sub><i><sub>x</sub></i> Alloys: Composition‐Dependent Bowing Coefficient and Electron–Phonon Interaction Open
The design of advanced functional materials with customized properties often requires the use of an alloy. This approach has been used for decades, but only recently to create van der Waals (vdW) alloys for applications in electronics, opt…
View article: Defect-Assisted High Photoconductive UV–Visible Gain in Perovskite-Decorated Graphene Transistors
Defect-Assisted High Photoconductive UV–Visible Gain in Perovskite-Decorated Graphene Transistors Open
Recent progress in the synthesis of high stability inorganic perovskite nanocrystals (NCs) has led to their increasing use in broadband photodetectors. These NCs are of particular interest for the UV range as they have the potential to ext…
View article: Magnetophonon spectroscopy of Dirac fermion scattering by transverse and longitudinal acoustic phonons in graphene
Magnetophonon spectroscopy of Dirac fermion scattering by transverse and longitudinal acoustic phonons in graphene Open
Recently observed magnetophonon resonances in the magnetoresistance of\ngraphene are investigated using the Kubo formalism. This analysis provides a\nquantitative fit to the experimental data over a wide range of carrier\ndensities. It dem…
View article: Two-Dimensional Covalent Crystals by Chemical Conversion of Thin van der Waals Materials
Two-Dimensional Covalent Crystals by Chemical Conversion of Thin van der Waals Materials Open
Most of the studied two-dimensional (2D) materials have been obtained by exfoliation of van der Waals crystals. Recently, there has been growing interest in fabricating synthetic 2D crystals which have no layered bulk analogues. These effo…
View article: Magnetophonon resistance oscillations in graphene and carrier screening of the longitudinal acoustic modes
Magnetophonon resistance oscillations in graphene and carrier screening of the longitudinal acoustic modes Open
Recently observed magnetophonon resonances in the magnetoresistance of graphene are investigated using the Kubo formalism. This analysis provides a quantitative fit to the experimental data over a wide range of carrier densities. It demons…
View article: Observation of magnetophonon oscillations in extra-large graphene devices
Observation of magnetophonon oscillations in extra-large graphene devices Open
Van der Waals materials and their heterostructures offer a versatile platform for studying a variety of quantum transport phenomena due to their unique crystalline properties and the unprecedented ability in tuning their electronic spectru…
View article: Photoquantum Hall Effect and Light‐Induced Charge Transfer at the Interface of Graphene/InSe Heterostructures
Photoquantum Hall Effect and Light‐Induced Charge Transfer at the Interface of Graphene/InSe Heterostructures Open
The transfer of electronic charge across the interface of two van der Waals crystals can underpin the operation of a new class of functional devices. Among van der Waals semiconductors, an exciting and rapidly growing development involves …
View article: High-Temperature Molecular Beam Epitaxy of Hexagonal Boron Nitride with High Active Nitrogen Fluxes
High-Temperature Molecular Beam Epitaxy of Hexagonal Boron Nitride with High Active Nitrogen Fluxes Open
Hexagonal boron nitride (hBN) has attracted a great deal of attention as a key component in van der Waals (vdW) heterostructures, and as a wide band gap material for deep-ultraviolet devices. We have recently demonstrated plasma-assisted m…
View article: Moiré-Modulated Conductance of Hexagonal Boron Nitride Tunnel Barriers
Moiré-Modulated Conductance of Hexagonal Boron Nitride Tunnel Barriers Open
Monolayer hexagonal boron nitride (hBN) tunnel barriers investigated using conductive atomic force microscopy reveal moiré patterns in the spatial maps of their tunnel conductance consistent with the formation of a moiré superlattice betwe…
View article: High-order fractal states in graphene superlattices
High-order fractal states in graphene superlattices Open
Significance Electronic spectra of crystals in ultrahigh magnetic fields are expected to be fractal as symbolized by the theoretical plots called Hofstadter butterflies. Despite decades-long interest, their origin is often misconstrued. In…
View article: Magnon-assisted tunnelling in van der Waals heterostructures based on CrBr3
Magnon-assisted tunnelling in van der Waals heterostructures based on CrBr3 Open
The growing family of two-dimensional (2D) materials that are now available can be used to assemble van der Waals heterostructures with a wide range of properties. Of particular interest are tunnelling heterostructures, which have been use…