Publications de Giulia Fulvia Mancini

A setup for hard x-ray time-resolved resonant inelastic x-ray scattering at SwissFEL

Majed Chergui, Michele Puppin, Giulia Fulvia Mancini, Ludmila Maria Diniz Leroy, Hui-Yuan Chen, Rolf Baldwin Versteeg

We present a new setup for resonant inelastic hard x-ray scattering at the Bernina beamline of SwissFEL with energy, momentum, and temporal resolution. The compact R = 0.5 m Johann-type spectrometer can be equipped with up to three crystal analyzers and al ...

Aip Publishing2024

Separation of kinetic rate orders in extreme ultraviolet transient grating spectroscopy

Majed Chergui, Michele Puppin, Giulia Fulvia Mancini, Camila Bacellar Cases Da Silveira, Oliviero Cannelli, Rebecca Ann Ingle, Serhii Polishchuk, Hugo Jean Baptiste Marroux

We present an extreme ultraviolet (EUV) transient grating (TG) experiment of the spinel Co3O4 compound using tuneable incident energies across the Co M-2,M-3-edge and a 395 nm probe pulse, detecting both the first and the second diffraction orders (SDOs). ...

IOP Publishing2024

Ultrafast Energy Transfer from Photoexcited Tryptophan to the Haem in Cytochrome c

Majed Chergui, Giulia Fulvia Mancini, Camila Bacellar Cases Da Silveira, Dominik Kinschel, Oliviero Cannelli, Rebecca Ann Ingle, Yang Zhao, Jérémy Raymond Jean Maurice Rouxel

: We report femtosecond Fe K-edge absorption (XAS) and nonresonant X-ray emission (XES) spectra of ferric cytochrome C (Cyt c) upon excitation of the haem (>300 nm) or mixed excitation of the haem and tryptophan (

2023

Hard X-ray helical dichroism of disordered molecular media

Majed Chergui, Giulia Fulvia Mancini, Malte Oppermann, Camila Bacellar Cases Da Silveira, Dominik Kinschel, Oliviero Cannelli, Christian David, Jérôme Lacour

Chirality is a structural property of molecules lacking mirror symmetry that has strong implications in diverse fields, ranging from life sciences to materials science. Chirality-sensitive spectroscopic methods, such as circular dichroism, exhibit weak sig ...

Nature Publishing Group2022

Quantifying Photoinduced Polaronic Distortions in Inorganic Lead Halide Perovskite Nanocrystals

Majed Chergui, Nicola Colonna, Michele Puppin, Giulia Fulvia Mancini, Thomas Charles Henry Rossi, Andre Al Haddad, Dominik Kinschel, Oliviero Cannelli, James Michael Budarz, Ludmila Maria Diniz Leroy

The development of next-generation perovskite-based optoelectronic devices relies critically on the understanding of the interaction between charge carriers and the polar lattice in out-of-equilibrium conditions. While it has become increasingly evident fo ...

2021

Hard X-ray transient grating spectroscopy on bismuth germanate

Majed Chergui, Giulia Fulvia Mancini, Jérémy Raymond Jean Maurice Rouxel

Optical-domain transient grating (TG) spectroscopy is a versatile background-free four-wave-mixing technique that is used to probe vibrational, magnetic and electronic degrees of freedom in the time domain(1). The newly developed coherent X-ray free-electr ...

Nature Publishing Group2021

Femtosecond X-ray spectroscopy of haem proteins

Majed Chergui, Giulia Fulvia Mancini, Camila Bacellar Cases Da Silveira, Dominik Kinschel, Oliviero Cannelli, Boris Sorokin

We discuss our recently reported femtosecond (fs) X-ray emission spectroscopy results on the ligand dissociation and recombination in nitrosylmyoglobin (MbNO) in the context of previous studies on ferrous haem proteins. We also present a preliminary accoun ...

ROYAL SOC CHEMISTRY2021

Ultrafast electron localization in the EuNi2(Si0.21Ge0.79)(2) correlated metal

Giulia Fulvia Mancini, Jérémy Raymond Jean Maurice Rouxel

Ultrafast electron delocalization induced by a femtosecond laser pulse is a well-known process in which electrons are ejected from the ions within the laser pulse duration. However, very little is known about the speed of electron localization out of an el ...

AMER PHYSICAL SOC2021

Strain wave pathway to semiconductor-to-metal transition revealed by time-resolved X-ray powder diffraction

Majed Chergui, Giulia Fulvia Mancini

One of the main challenges in ultrafast material science is to trigger phase transitions with short pulses of light. Here we show how strain waves, launched by electronic and structural precursor phenomena, determine a coherent macroscopic transformation p ...

Nature Research2021

X-ray absorption linear dichroism at the Ti K-edge of rutile (001) TiO2 single crystal

Majed Chergui, Giulia Fulvia Mancini, Thomas Charles Henry Rossi, Camila Bacellar Cases Da Silveira, Dominik Kinschel, Oliviero Cannelli, Jérémy Raymond Jean Maurice Rouxel

X-ray absorption linear dichroism of rutile TiO2 at the Ti K-edge provides information about the electronic states involved in the pre-edge transitions. Here, linear dichroism with high energy resolution is analyzed in combination with ab initio finite dif ...

INT UNION CRYSTALLOGRAPHY2020