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2-butyne on Si(001) at room temperature: An XPS and NEXAFS study

The research activity on the beamline started with experiments on various molecules deposited on Silicon surfaces: deposition of NH3[ref. 1], n- Propyltriethoxysilane[ref. 2], water[ref. 3], and 2-butyne[ref. 4]. During these experiments we defined the experimental procedures for fast NEXAFS and fast photoemission experiments to follow the adsorption process at low partial pressures of the deposited molecule. Experiments were performed in real time to follow the reaction kinetics and to define the more interesting coverage configurations.


Properties of Hollow Molecules Probed by Single-Photon Double Ionization
 The formation of hollow molecules (with a completely empty K shell in one constituent atom)
through single-photon core double ionization has been demonstrated using a sensitive
magnetic bottle experimental technique combined with synchrotron radiation. Detailed
properties are presented such as the spectroscopy, formation, and decay dynamics of the
N2 2+K-2 main and satellite states and the strong chemical shifts of double K holes on an oxygen atom in CO, CO2, and O2 molecules.
Direct observation of the effect of Oersted Felds in nanostripes
for current-induced domain wall motion
 We have used time-resolved x-ray photoemission electron microscopy (PEEM) to directly observe the effect of nanosecond current pulses applied to spin-valve-like FeNi/Cu/Co magnetic nanostructures.
Internal Structure of InP/ZnS Nanocrystals Unraveled by
High-Resolution Soft X-ray Photoelectron Spectroscopy
 High-energy resolution photoelectron spectroscopy (_E<200 meV) is used to investigate the
internal structure of semiconductor quantum dots containing low Z-contrast elements.

 
UPMC invests in SOLEIL synchrotron: a new environmental photoemission set-up will soon be available on the TEMPO beamline

The TEMPO synchrotron beamline (soft X-rays, 50-1500 eV) is dedicated to the dynamic study of the electronic and magnetic properties of materials. Available to users since January 2008, at present TEMPO is equipped with an experimental station able to perform X-ray photoemission and X-ray absorption spectroscopy experiments under ultra-high vacuum conditions (10-11 mbar, the ambient pressure being ~1000 mbar).


Carbon contamination and "in situ" entrance mirrors cleaning

Carbon contamination of the optics is one of the main problems we have to solve in order to cover the whole soft X-ray range. At Soleil we have a particularly high contamination rate. For thick carbon layers on the mirrors, we have strong intensity reduction also in the 1KeV energy range. "In situ" cleaning procedure were succesfully tested.


 
Graphitization of 3C-SiC/Silicon: A step toward Graphene-Silicon technology

The graphene is nowadays one of the most promising materials for next generation electronic devices. The graphene is a carbon bidimensional single crystal (single layer). The stacking of single graphene layers forms the graphite. The graphene was discovered for the first time by Andre GEIM, from Department of Physics of Manchester University, jointly with Konstantin NOVOSELOV. They both were awarded the Nobel Prize in 2010. The graphene has attracted a much attention these last years from academic researchers as well as industrials.


 
Current-induced magnetization dynamics in magnetic nanowires revealed by time-resolved XMCD-PEEM imaging

Domain walls in magnetic nanowires have been proposed to constitute a new type of fast and cheap magnetic storage medium, the so-called race-track memory. For the first time, the displacement of such domain walls was imaged during the short (ns) current pulses that induce this displacement, using X-PEEM. These experiments were carried out on TEMPO beamline.


TEMPO - Nanoparticles on a Mediterranean diet
Although silicon has been the main constituent of photovoltaic cells up to now, new-generation cells are currently in the research and development phase.
2008
 
First practical workshops on the TEMPO beamline for students of the Nanomat Master’s programme (UPMC-Paris/Uppsala Universitet) sur la ligne TEMPO

On Friday, 28 November 2008, SOLEIL welcomed the first class of students registered in the Nanomat International Master’s programme to the TEMPO beamline for practical workshops on the topic of photoemission.


An Investigation into the Electronic Structure of Nanoparticulate Lead Sulphide and the Implications for Novel Hybrid Photovoltaic Cell Design - TEMPO beamline
Hybrid photovoltaic cells combine the light-harvesting and charge transport properties of semiconductor and metal oxide nanoparticles with polymer semiconductors...


H-induced metallization of 3C-SiC(100)3x2 surface 

Using valence band photoemission spectroscopy, we performed first band structure measurements of the 3C-SiC(100) 3x2 surface metallised by atomic hydrogen exposure.

 


 
How does glycine in ice evolve under irradiation? 
TEMPO beamline
 
 
 
 

 
Time Resolved Photoelectron spectroscopy using synchrotron radiation time structure - TEMPO beamline
 
 
 
 

 
 
Band structure of reconstructed Cu2O(-110) - TEMPO beamline
 
 
 
 

 
Reaction kinetics of N,N,N’,N’ tetramethylethylenediamine on Si(001)–2×1

 
 


 
 
Adsorption of NH3 on Si(001)-2x1 surface

 
 
 

 
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