136 citations · 845 across the 28 of their papers we have counts for
29 papers
Room temperature valley coherence in monolayer WSe2 mediated by chiral nematic liquid crystal
Hassan Lamsaadi, Andrea Balocchi, Aurélien Cuche +5
Valley coherence refers to a phase-coherent superposition of inequivalent momentum valleys, in which quantum information can be encoded in the relative valley phase. Chiral nematic…
Emergence of Localized Surface Plasmons in Unpatterned Hyperdoped Polycrystalline Silicon
Mohamad Bahsoun, Jesse Groenen, Gonzague Agez +7
The ability to engineer localized surface plasmon resonances at large scale usually relies on precise nanoscale patterning. Here, we demonstrate that mid-infrared plasmonic respons…
2D Excitonics with Atomically Thin Lateral Heterostructures
S. Shradha, R. Rosati, H. Lamsaadi +18
Semiconducting transition metal dichalcogenides (TMDs), such as MoSe and WSe, exhibit unique optical and electronic properties. Vertical stacking of layers of one or more T…
Silicon nanoantennas for tailoring the optical properties of MoS2 monolayers
Danae Katrisioti, Peter R. Wiecha, Aurélien Cuche +11
Silicon-based dielectric nanoantennas provide an effective platform for engineering light-matter interactions in van der Waals semiconductors. Here, we demonstrate near-field coupl…
Directional silicon nano-antennas for quantum emitter control designed by evolutionary optimization
Romain Hernandez, Peter R. Wiecha, Jean-Marie Poumirol +5
We optimize silicon nano-antennas to enhance and steer the emission of local quantum sources. We combine global evolutionary optimization (EO) with frequency domain electrodynamica…
Kapitza-resistance-like exciton dynamics in atomically flat MoSe-WSe lateral heterojunction
Hassan Lamsaadi, Dorian Beret, Ioannis Paradisanos +13
Being able to control the neutral excitonic flux is a mandatory step for the development of future room-temperature two-dimensional excitonic devices. Semiconducting Monolayer Tran…
Control of light emission of quantum emitters coupled to silicon nanoantenna using cylindrical vector beams
Martin Montagnac, Yoann Brûlé, Aurélien Cuche +11
Light emission of europium (Eu3+) ions placed in the vicinity of optically resonant nanoantennas is usually controlled by tailoring the local density of photon states (LDOS). We sh…
Probing the optical near-field interaction of Mie nanoresonators with atomically thin semiconductors
Ana Estrada-Real, Ioannis Paradisanos, Peter R. Wiecha +10
Optical Mie resonators based on silicon nanostructures allow tuning of light-matter-interaction with advanced design concepts based on CMOS compatible nanofabrication. Optically ac…
Infrared nanoplasmonic properties of hyperdoped embedded Si nanocrystals in the few electrons regime
Meiling Zhang, Jean-Marie Poumirol, Nicolas Chery +13
Using Localized Surface Plasmon Resonance (LSPR) as an optical probe we demonstrate the presence of free carriers in phosphorus doped silicon nanocrystals (SiNCs) embedded in a sil…
Exciton spectroscopy and diffusion in MoSe2-WSe2 lateral heterostructures encapsulated in hexagonal boron nitride
Dorian Beret, Ioannis Paradisanos, Ziyang Gan +17
Chemical vapor deposition (CVD) allows lateral edge epitaxy of transition metal dichalcogenide heterostructures with potential applications in optoelectronics. Critical for carrier…
Hyper-doped silicon nanoantennas and metasurfaces for tunable infrared plasmonics
Jean-Marie Poumirol, Clément Majorel, Nicolas Chery +11
We present the experimental realization of ordered arrays of hyper-doped silicon nanodisks, which exhibit a localized surface plasmon resonance. The plasmon is widely tunable in a…
Interband plasmon polaritons in magnetized charge-neutral graphene
T. M. Slipchenko, J. -M. Poumirol, A. B. Kuzmenko +2
Studying the collective excitations in charge neutral graphene (CNG) has recently attracted a great interest because of unusual mechanisms of the charge carrier dynamics. The latte…
Unveiling the optical emission channels of monolayer semiconductors coupled to silicon nanoantennas
Jean-Marie Poumirol, Ioannis Paradisanos, Shivangi Shree +13
Monolayers (MLs) of transition metal dichalcogenides (TMDs) such as WSe2 and MoSe2 can be placed by dry stamping directly on broadband dielectric resonators, which have the ability…
High sensitivity variable-temperature infrared nanoscopy of conducting oxide interfaces
Weiwei Luo, Margherita Boselli, Jean-Marie Poumirol +6
Probing the local transport properties of two-dimensional electron systems (2DES) confined at buried interfaces requires a non-invasive technique with a high spatial resolution ope…
Magnetoplasmonic Enhancement of Faraday Rotation in Patterned Graphene Metasurfaces
Michele Tamagnone, Tetiana M. Slipchenko, Clara Moldovan +10
Faraday rotation is a fundamental property present in all non-reciprocal optical elements. In the THz range, graphene displays strong Faraday rotation; unfortunately, it is limited…
Electrically controlled terahertz magneto-optical phenomena in continuous and patterned graphene
Jean-Marie Poumirol, Peter Q. Liu, Tetiana M. Slipchenko +4
The magnetic circular dichroism and the Faraday rotation are the fundamental phenomena of great practical importance arising from the breaking of the time reversal symmetry by a ma…
Isotope effect in superconducting n-doped SrTiO
A. Stucky, G. Scheerer, Z. Ren +5
We report the influence on the superconducting critical temperature in doped SrTiO of the substitution of the natural O atoms by the heavier isotope O. We o…
Suppressed magnetic circular dichroism and valley-selective magneto-absorption due to the effective mass anisotropy in bismuth
Pieter J. de Visser, Julien Levallois, Michaël K. Tran +6
We have measured the far-infrared reflectivity and Kerr angle spectra on a high-quality crystal of pure semimetallic bismuth as a function of magnetic field, from which we extract…
Hall and field-effect mobilities in few layered -WSe field-effect transistors
N. R. Pradhan, D. Rhodes, S. Memaran +9
Here, we present a temperature () dependent comparison between field-effect and Hall mobilities in field-effect transistors based on few-layered WSe exfoliated onto SiO.…
Multicomponent Quantum Hall Ferromagnetism and Landau Level Crossing in Rhombohedral Trilayer Graphene
Y. Lee, D. Tran, K. Myhro +6
Using transport measurements, we investigate multicomponent quantum Hall (QH) ferromagnetism in dual-gated rhombohedral trilayer graphene (r-TLG), in which the real spin, orbital p…
Giant Interaction-Induced Gap and Electronic Phases in Rhombohedral Trilayer Graphene
Y. Lee, D. Tran, K. Myhro +7
Due to their unique electron dispersion and lack of a Fermi surface, Coulomb interactions in undoped two-dimensional Dirac systems, such as single, bi- and tri-layer graphene, can…
Cyclotron resonance of single valley Dirac fermions in gapless HgTe quantum well
J. Ludwig, Yu. B. Vasilyev, N. N. Mikhailov +4
We report on Landau level spectroscopy studies of two HgTe quantum wells (QWs) near or at the critical well thickness, where the band gap vanishes. In magnetic fields up to =16T…
Magnetoplasmons in quasi-neutral epitaxial graphene nanoribbons
J. M. Poumirol, W. Yu, X. Chen +8
We present infrared transmission spectroscopy study of the inter-Landau-level excitations in quasi-neutral epitaxial graphene nanoribbon arrays. We observed a substantial deviation…
Measurement of Filling-Factor-Dependent Magnetophonon Resonances in Graphene Using Raman Spectroscopy
Y. Kim, J. M. Poumirol, A. Lombardo +9
We perform polarization-resolved Raman spectroscopy on graphene in magnetic fields up to 45T. This reveals a filling-factor-dependent, multi-component anticrossing structure of the…