D. Céolin
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View article: Oxygen Vacancy Dynamics in Different Switching Modes of Hf<sub>0.5</sub>Zr<sub>0.5</sub>O<sub>2−δ</sub>
Oxygen Vacancy Dynamics in Different Switching Modes of Hf<sub>0.5</sub>Zr<sub>0.5</sub>O<sub>2−δ</sub> Open
HfO2, one of the most common materials in resistive switching devices, can stabilize in a ferroelectric orthorhombic phase, enabling two nonvolatile polarization states via oxygen displacement in the unit cell. Under certain conditions, fe…
View article: Postcollision interaction in the liquid phase: The role of electron scattering
Postcollision interaction in the liquid phase: The role of electron scattering Open
We report a detailed study of post-collision interaction (PCI) in a liquid medium. We investigate PCI for the Auger KLL electrons of solvated Cl$^-$, K$^+$ and Ca$^{2+}$. All three isoelectronic ions exhibit a very similar PCI behavior, wh…
View article: Ultrafast Charge-Transfer and Auger Decay Processes in Aqueous CaCl$_2$ Solution: Insights from Core-Level Spectroscopy
Ultrafast Charge-Transfer and Auger Decay Processes in Aqueous CaCl$_2$ Solution: Insights from Core-Level Spectroscopy Open
Understanding the interaction between metal ions and their aqueous environment is fundamental in many areas of chemistry, biology, and environmental science. In this study, we investigate the electronic structure of hydrated calcium ions, …
View article: Symmetry Breaking around Aqueous Ammonia Revealed in Nitrogen K-edge X-ray Absorption
Symmetry Breaking around Aqueous Ammonia Revealed in Nitrogen K-edge X-ray Absorption Open
Nitrogen K-edge X-ray absorption (XA) spectroscopy of aqueous ammonia reveals a splitting in the main-edge, which through theoretical modeling is shown to be related to symmetry breaking in hydrogen bonding. The XA main-edge of NH3 is form…
View article: Probing supramolecular structures in solution by resonant energy transfer in the X-ray range
Probing supramolecular structures in solution by resonant energy transfer in the X-ray range Open
The first Far-Zone Resonant Energy Transfer (FZRET) spectroscopy experiment in liquid microjet provides quantitative characterisation of supramolecular organisation in solution with atomic spatial resolution.
View article: Nonlinear spectral dispersion in resonant Auger scattering from <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>SF</mml:mi><mml:mn>6</mml:mn></mml:msub></mml:math> for studying nuclear potentials and dynamics
Nonlinear spectral dispersion in resonant Auger scattering from for studying nuclear potentials and dynamics Open
In this study, we integrate experimental observations and theoretical models to elucidate the complex phenomena observed in the resonant S K-edge Auger scattering spectra of the SF6 molecule. A two-dimensional spectral map, constructed of …
View article: Attosecond formation of charge-transfer-to-solvent states of aqueous ions probed using the core-hole-clock technique
Attosecond formation of charge-transfer-to-solvent states of aqueous ions probed using the core-hole-clock technique Open
Charge transfer between molecules lies at the heart of many chemical processes. Here, we focus on the ultrafast electron dynamics associated with the formation of charge-transfer-to-solvent (CTTS) states following X-ray absorption in aqueo…
View article: Development of hard X-ray photoelectron spectroscopy in liquid cells using optimized microfabricated silicon nitride membranes
Development of hard X-ray photoelectron spectroscopy in liquid cells using optimized microfabricated silicon nitride membranes Open
We present first hard X-ray photoelectron spectroscopy (HAXPES) results of aqueous salt solutions and dispersions of gold nanoparticles in liquid cells equipped with specially designed microfabricated thin silicon nitride membranes, with t…
View article: Fluorescence-mediated postcollision interaction in x-ray photoionization of the Xe <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>K</mml:mi></mml:math> edge
Fluorescence-mediated postcollision interaction in x-ray photoionization of the Xe edge Open
International audience
View article: MOSARIX: Multi-crystal spectrometer in the tender x-ray range at SOLEIL synchrotron
MOSARIX: Multi-crystal spectrometer in the tender x-ray range at SOLEIL synchrotron Open
We have built and commissioned a novel standalone multi-crystal x-ray spectrometer (MOSARIX) in the von Hamos configuration based on highly annealed pyrolytic graphite crystals. The spectrometer is optimized for the energy range of 2–5 keV…
View article: Auger photoelectron coincidence spectroscopy of molecules adsorbed on a gold wire surface
Auger photoelectron coincidence spectroscopy of molecules adsorbed on a gold wire surface Open
In this paper, we present the results on Auger/photoelectron coincidence spectroscopy (APECS) of molecules—propanethiol and bovine serum albumin (BSA)-deposited on a gold wire surface, using a magnetic bottle electron time-of-flight spectr…
View article: X-ray induced ultrafast charge transfer in thiophene-based conjugated polymers controlled by core-hole clock spectroscopy
X-ray induced ultrafast charge transfer in thiophene-based conjugated polymers controlled by core-hole clock spectroscopy Open
Ultrafast charge transfer along the polymer chains is triggered by a selective resonant core-excitation of the sulfur atom in P3HT films and powders. Our approach opens perspectives for studies on intra-molecular conductivity in organic mo…
View article: Auger Shake-Up Assisted Electron Recapture
Auger Shake-Up Assisted Electron Recapture Open
The presence of doubly excited states (DESs) above the core-hole ionization threshold nontrivially modulates the x-ray absorption because the participator Auger decay couples DESs to the underlying low-energy core-hole continuum. We show t…
View article: X-ray induced ultrafast charge transfer in thiophene-based conjugated polymers controlled by core-hole clock spectroscopy
X-ray induced ultrafast charge transfer in thiophene-based conjugated polymers controlled by core-hole clock spectroscopy Open
We explore ultrafast charge transfer (CT) resonantly induced by hard x-ray radiation in organic thiophene-based polymers at the sulfur K-edge. A combination of core-hole clock spectroscopy with real-time propagation time-dependent density …
View article: Resonant Auger spectroscopy on solid xenon on gold, silver, and copper substrates
Resonant Auger spectroscopy on solid xenon on gold, silver, and copper substrates Open
An investigation of the radiationless decay of core excited Xe atoms in the region of Xe L3M4,5M4,5 Auger electron kinetic energies (using x-ray energies in the vicinity of the L3 threshold) is presented for Xe adsorbed on Cu, Ag, and Au. …
View article: Direct Measurements of Interfacial Photovoltage and Band Alignment in Perovskite Solar Cells Using Hard X-ray Photoelectron Spectroscopy
Direct Measurements of Interfacial Photovoltage and Band Alignment in Perovskite Solar Cells Using Hard X-ray Photoelectron Spectroscopy Open
A heterojunction is the key junction for charge extraction in many thin film solar cell technologies. However, the structure and band alignment of the heterojunction in the operating device are often difficult to predict from calculations …
View article: Generalization of the post-collision interaction effect from gas-phase to solid-state systems demonstrated in thiophene and its polymers
Generalization of the post-collision interaction effect from gas-phase to solid-state systems demonstrated in thiophene and its polymers Open
We demonstrate experimentally and theoretically the presence of the post-collision interaction (PCI) effect in sulfur KL2,3L2,3 Auger electron spectra measured in the gas-phase thiophene and in solid-state organic polymers: polythiophene (…
View article: First (e,e) coincidence measurements on solvated sodium benzoate in water using a magnetic bottle time-of-flight spectrometer
First (e,e) coincidence measurements on solvated sodium benzoate in water using a magnetic bottle time-of-flight spectrometer Open
Sodium benzoate molecules solvated in water are studied using coincidence electron spectroscopy coupled with a liquid microjet device.
View article: Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions - data
Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions - data Open
Data set pertaining to the manuscript "Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions", accepted for publication in Nature Chemistry. Files with extension .h5 are hdf5-files structured accor…
View article: Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions - data
Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions - data Open
Data set pertaining to the manuscript "Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions", accepted for publication in Nature Chemistry. Files with extension .h5 are hdf5-files structured accor…
View article: Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions - data
Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions - data Open
Data set pertaining to the manuscript "Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions", accepted for publication in Nature Chemistry. Files with extension .h5 are hdf5-files structured accor…
View article: Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions - data
Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions - data Open
Data set pertaining to the manuscript "Radiation damage hot spots formed by two-step electron transfer mediated decay of solvated ions", submitted. Files with extension .h5 are hdf5-files structured according to the NeXus standard v2022.07…
View article: Post Collision Interaction effect studied of solvated ions ionized in K shell
Post Collision Interaction effect studied of solvated ions ionized in K shell Open
International audience
View article: Resonant Auger decay induced by the symmetry-forbidden 1<i>a</i>1<i>g</i> → 6<i>a</i>1<i>g</i> transition of the SF6 molecule
Resonant Auger decay induced by the symmetry-forbidden 1<i>a</i>1<i>g</i> → 6<i>a</i>1<i>g</i> transition of the SF6 molecule Open
Resonant Auger electron spectroscopic study at the symmetry-forbidden 1a1g→6a1g excitation below the S K-shell threshold of SF6 is reported. Partial electron yield and resonant KLL Auger spectra have been measured by using monochromatized …
View article: Probing Aqueous Ions with Non-local Auger Relaxation - data
Probing Aqueous Ions with Non-local Auger Relaxation - data Open
Data set pertaining to the article "Probing aqueous ions with non-local Auger relaxation" | Physical Chemistry Chemical Physics, 24, 8661-8671 (2022). doi: 10.1039/D2CP00227B. Files with extension .h5 are hdf5-files structured according to…
View article: Probing Aqueous Ions with Non-local Auger Relaxation - data
Probing Aqueous Ions with Non-local Auger Relaxation - data Open
Data set pertaining to the article "Probing aqueous ions with non-local Auger relaxation" | Physical Chemistry Chemical Physics, 24, 8661-8671 (2022). doi: 10.1039/D2CP00227B. Files with extension .h5 are hdf5-files structured according to…
View article: Probing Aqueous Ions with Non-local Auger Relaxation - data
Probing Aqueous Ions with Non-local Auger Relaxation - data Open
Data set pertaining to the article "Probing aqueous ions with non-local Auger relaxation" | Physical Chemistry Chemical Physics, 24, 8661-8671 (2022). doi: 10.1039/D2CP00227B. Files with extension .h5 are hdf5-files structured according to…
View article: Coupling a magnetic bottle multi-electron spectrometer with a liquid micro-jet device: a comprehensive study of solvated sodium benzoate at the O 1 <i>s</i> threshold
Coupling a magnetic bottle multi-electron spectrometer with a liquid micro-jet device: a comprehensive study of solvated sodium benzoate at the O 1 <i>s</i> threshold Open
We have developed a magnetic bottle time-of-flight electron-electron coincidence spectrometer to perform measurements on solvated molecules in a liquid micro-jet. We present here the first results obtained after ionization of the oxygen 1 …
View article: Simulation of Auger decay dynamics in the hard X-ray regime: HCl as a showcase
Simulation of Auger decay dynamics in the hard X-ray regime: HCl as a showcase Open
2-D core-electron spectroscopy: resolving excitation and relaxation pathways.