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View article: Cathodoluminescence Study of a Quantum Dot in a Nanowire for Single-Photon Emission
Cathodoluminescence Study of a Quantum Dot in a Nanowire for Single-Photon Emission Open
Cathodoluminescence in a scanning electron microscope was applied to a semiconductor quantum dot in a nanowire able to emit single photons. We show that cathodoluminescence can be used not only for imaging and spectroscopy, but also to mea…
View article: Dual-adatom diffusion-limited growth model for compound nanowires: Application to InAs nanowires
Dual-adatom diffusion-limited growth model for compound nanowires: Application to InAs nanowires Open
We propose a dual-adatom diffusion-limited model for the growth of compound semiconductor nanowires via the vapor-liquid-solid or the vapour-solid-solid mechanisms. The growth is catalyzed either by a liquid or a solid nanoparticle. We val…
View article: Brightness and purity of a room-temperature single-photon source in the blue–green range
Brightness and purity of a room-temperature single-photon source in the blue–green range Open
We discuss a promising solid-state system that emits single photons at room temperature in the blue–green range, making it an attractive candidate for quantum communications in free space and underwater. The active element is a core-shell …
View article: Brightness and purity of a room-temperature single-photon source in the blue-green range
Brightness and purity of a room-temperature single-photon source in the blue-green range Open
Single-photon sources are crucial for developing secure telecommunications. However, most systems operate at cryogenic temperatures. Here, we discuss a promising solid-state system emitting single photons at room temperature in the blue-gr…
View article: Quantitative analysis of the blue-green single-photon emission from a quantum dot in a thick tapered nanowire
Quantitative analysis of the blue-green single-photon emission from a quantum dot in a thick tapered nanowire Open
Quantum dots acting as single photon emitters in the blue-green range are fabricated and characterized at cryogenic temperature. They consist in CdSe dots inserted in (Zn,Mg)Se nanowires with a thick shell. Photoluminescence spectra, decay…
View article: Erratum: Long-range spin jump diffusion revealed by dynamic light scattering [Phys. Rev. B <b>103</b>, 205208 (2021)]
Erratum: Long-range spin jump diffusion revealed by dynamic light scattering [Phys. Rev. B <b>103</b>, 205208 (2021)] Open
Received 5 September 2022DOI:https://doi.org/10.1103/PhysRevB.106.119901©2022 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasSpin diffusionSpin relaxationTechniquesDiffusion & random walksLight scatteringSpin noise …
View article: Quantitative analysis of the blue-green single-photon emission from a quantum dot in a thick tapered nanowire
Quantitative analysis of the blue-green single-photon emission from a quantum dot in a thick tapered nanowire Open
Quantum dots acting as single photon emitters in the blue-green range are fabricated and characterized at cryogenic temperature. They consist in CdSe dots inserted in (Zn,Mg)Se nanowires with a thick shell. Photoluminescence spectra, decay…
View article: Regulated Dynamics with Two Monolayer Steps in Vapor–Solid–Solid Growth of Nanowires
Regulated Dynamics with Two Monolayer Steps in Vapor–Solid–Solid Growth of Nanowires Open
The growth of ZnTe nanowires and ZnTe-CdTe nanowire heterostructures is studied by in situ transmission electron microscopy. We describe the shape and the change of shape of the solid gold nanoparticle during vapor-solid-solid growth. We s…
View article: The onset of tapering in the early stage of growth of a nanowire
The onset of tapering in the early stage of growth of a nanowire Open
The early stage of growth of semiconductor nanowires is studied in the case where the sidewall adatoms have a short diffusion length due to a strong desorption. Experimental results are described for the growth of ZnSe nanowires by molecul…
View article: Regulated dynamics with two-monolayer steps in vapor-solid-solid growth of nanowires
Regulated dynamics with two-monolayer steps in vapor-solid-solid growth of nanowires Open
The growth of ZnTe nanowires and ZnTe-CdTe nanowire heterostructures is studied by \emph{in situ} transmission electron microscopy. We describe the shape, and the change of shape, of the solid gold nanoparticle during vapor-solid-solid gro…
View article: Light hole states in a strained quantum dot: Numerical calculation and phenomenological models
Light hole states in a strained quantum dot: Numerical calculation and phenomenological models Open
Starting from the numerical solution of the 6-band \\textbf{k.p} description\nof a lattice-mismatched ellipsoidal quantum dot situated inside a nanowire,\nincluding a spin Zeeman effect with values appropriate to a dilute magnetic\nsemicon…
View article: Long-range spin jump diffusion revealed by dynamic light scattering
Long-range spin jump diffusion revealed by dynamic light scattering Open
International audience
View article: Controlling the shape of a tapered nanowire: lessons from the Burton-Cabrera-Frank model
Controlling the shape of a tapered nanowire: lessons from the Burton-Cabrera-Frank model Open
The propagation of sidewall steps during the growth of nanowires is calculated in the frame of the Burton-Cabrera-Frank model. The stable shape of the nanowire comprises a cylinder section on top of a cone section: their characteristics ar…
View article: Controlling the shape of a tapered nanowire: lessons from the Burton-Cabrera-Frank model
Controlling the shape of a tapered nanowire: lessons from the Burton-Cabrera-Frank model Open
The propagation of sidewall steps during the growth of nanowires is calculated in the frame of the Burton-Cabrera-Frank model. The stable shape of the nanowire comprises a cylinder section on top of a cone section: their characteristics ar…
View article: Probing the light hole/heavy hole switching with correlated magneto-optical spectroscopy and chemical analysis on a single quantum dot
Probing the light hole/heavy hole switching with correlated magneto-optical spectroscopy and chemical analysis on a single quantum dot Open
A whole series of complementary studies have been performed on the same single nanowire containing a quantum dot: cathodoluminescence spectroscopy and imaging, micro-photoluminescence spectroscopy under magnetic field and as a function of …
View article: Light / heavy hole switching with correlated characterization on a single quantum dot : Probing the light hole / heavy hole switching with correlated magneto-optical spectroscopy and chemical analysis on a single quantum dot
Light / heavy hole switching with correlated characterization on a single quantum dot : Probing the light hole / heavy hole switching with correlated magneto-optical spectroscopy and chemical analysis on a single quantum dot Open
A whole series of complementary studies have been performed on the same, single nanowire containing a quantum dot: cathodoluminescence spectroscopy and imaging, micro-photoluminescence spectroscopy under magnetic field and as a function of…
View article: Nanowire growth and sublimation: CdTe quantum dots in ZnTe nanowires
Nanowire growth and sublimation: CdTe quantum dots in ZnTe nanowires Open
The role of the sublimation of the compound and of the evaporation of the constituents from the gold nanoparticle during the growth of semiconductor nanowires is exemplified with CdTe-ZnTe heterostructures. Operating close to the upper tem…
View article: Control of the incubation time in the vapor-solid-solid growth of semiconductor nanowires
Control of the incubation time in the vapor-solid-solid growth of semiconductor nanowires Open
Nanowires grown in the vapor-solid-solid mode using solid gold nanoparticles as a catalyst may exhibit a strong fluctuation of their length mostly due to the presence of an incubation time with a large distribution. We show that this is ef…
View article: Light-hole exciton in a nanowire quantum dot
Light-hole exciton in a nanowire quantum dot Open
International audience
View article: Discrete <scp>STEM</scp> / <scp>EDX</scp> tomography for quantitative 3D reconstructions of chemical nanostructures
Discrete <span>STEM</span> / <span>EDX</span> tomography for quantitative 3D reconstructions of chemical nanostructures Open
We report here on the quantitative 3D reconstruction of core‐shell nanostructures by STEM/EDX using two X‐ray maps acquired at two different tilt angles perpendicular to each other (Rueda et al., 2016; fig. 1). The method is based on the m…
View article: Strained GaAs/InGaAs Core-Shell Nanowires for Photovoltaic Applications
Strained GaAs/InGaAs Core-Shell Nanowires for Photovoltaic Applications Open
We report on the successful growth of strained core-shell GaAs/InGaAs nanowires on Si (111) substrates by molecular beam epitaxy. The as-grown nanowires have a density in the order of 108 cmâ2, length between 3 and 3.5 μm, and diamete…