196 citations · 1.3k across the 15 of their papers we have counts for
16 papers
First-order magnetic phase-transition of mobile electrons in monolayer MoS
Jonas Gaël Roch, Dmitry Miserev, Guillaume Froehlicher +7
Evidence is presented for a first-order magnetic phase transition in a gated two-dimensional semiconductor, monolayer-MoS. The phase boundary separates a spin-polarised (ferrom…
Filtering the photoluminescence spectra of atomically thin semiconductors with graphene
Etienne Lorchat, Luis E. Parra López, Cédric Robert +6
Atomically thin semiconductors made from transition metal dichalcogenides (TMDs) are model systems for investigations of strong light-matter interactions and applications in nanoph…
Optical second harmonic generation in encapsulated single-layer InSe
Nadine Leisgang, Jonas G. Roch, Guillaume Froehlicher +4
We report the observation of optical second harmonic generation (SHG) in single-layer indium selenide (InSe). We measure a second harmonic signal of under…
Spin-Polarized Electrons in Monolayer MoS
Jonas G. Roch, Guillaume Froehlicher, Nadine Leisgang +4
The optical susceptibility is a local, minimally-invasive and spin-selective probe of the ground state of a two-dimensional electron gas. We apply this probe to a gated monolayer o…
Quantum confined Stark effect in a MoS monolayer van der Waals heterostructure
Jonas G. Roch, Nadine Leisgang, Guillaume Froehlicher +5
The optics of dangling-bond-free van der Waals heterostructures containing transition metal dichalcogenides are dominated by excitons. A crucial property of a confined exciton is t…
Rigid-layer Raman-active modes in -layer Transition Metal Dichalcogenides: interlayer force constants and hyperspectral Raman imaging
Guillaume Froehlicher, Etienne Lorchat, Olivia Zill +2
We report a comparative study of rigid layer Raman-active modes in -layer transition metal dichalcogenides. Trigonal prismatic (2Hc, such as MoSe, MoTe, WS, WSe)…
Charge versus energy transfer in atomically-thin graphene-transition metal dichalcogenide van der Waals heterostructures
Guillaume Froehlicher, Etienne Lorchat, Stéphane Berciaud
Van der Waals heterostuctures, made from stacks of two-dimensional materials, exhibit unique light-matter interactions and are promising for novel optoelectronic devices. The perfo…
Conductance oscillations in graphene/nanoclusters hybrid material: towards large area single electron devices
Florian Godel, Louis Donald Notemgnou Mouafo, Guillaume Froehlicher +5
Large assemblies of self-organized aluminum nanoclusters embedded in an oxide layer are formed on graphene templates and used to build tunnel-junction devices. Unexpectedly, single…
Quantum interference effects in resonant Raman spectroscopy of single- and triple-layer MoTe from first principles
Henrique P. C. Miranda, Sven Reichardt, Guillaume Froehlicher +3
We present a combined experimental and theoretical study of resonant Raman spectroscopy in single- and triple-layer MoTe. Raman intensities are computed entirely from first pri…
Monitoring Electrostatically-Induced Deflection, Strain and Doping in Suspended Graphene using Raman Spectroscopy
Dominik Metten, Guillaume Froehlicher, Stéphane Berciaud
Electrostatic gating offers elegant ways to simultaneously strain and dope atomically thin membranes. Here, we report on a detailed \textit{in situ} Raman scattering study on graph…
Direct versus indirect band gap emission and exciton-exciton annihilation in atomically thin molybdenum ditelluride (MoTe)
Guillaume Froehlicher, Etienne Lorchat, Stéphane Berciaud
We probe the room temperature photoluminescence of -layer molybdenum ditelluride (MoTe) in the continuous wave (cw) regime. The photoluminescence quantum yield of monolayer…
Splitting of interlayer shear modes and photon energy dependent anisotropic Raman response in -layer ReSe and ReS
Etienne Lorchat, Guillaume Froehlicher, Stéphane Berciaud
We investigate the interlayer phonon modes in -layer rhenium diselenide (ReSe) and rhenium disulfide (ReS) by means of ultralow-frequency micro-Raman spectroscopy. These…
Unified description of the optical phonon modes in -layer MoTe
Guillaume Froehlicher, Etienne Lorchat, François Fernique +4
-layer transition metal dichalcogenides provide a unique platform to investigate the evolution of the physical properties between the bulk (three dimensional) and monolayer (qua…
Raman Spectroscopy of Electrochemically-Gated Graphene Transistors: Geometrical Capacitance, Electron-Phonon, Electron-Electron, and Electron-Defect Scattering
Guillaume Froehlicher, Stéphane Berciaud
We report a comprehensive micro-Raman scattering study of electrochemically-gated graphene field-effect transistors. The geometrical capacitance of the electrochemical top-gates is…
Distance Dependence of the Energy Transfer Rate From a Single Semiconductor Nanostructure to Graphene
François Federspiel, Guillaume Froehlicher, Michel Nasilowski +9
The near-field Coulomb interaction between a nano-emitter and a graphene monolayer results in strong Förster-type resonant energy transfer and subsequent fluorescence quenching. He…
Extended Lubrication Theory: Improved Estimates of Flow in Channels with Variable Geometry
Behrouz Tavakol, Guillaume Froehlicher, Douglas P. Holmes +1
Lubrication theory is broadly applicable to the flow characterization of thin fluid films and the motion of particles near surfaces. We offer an extension to lubrication theory by…