GALAXIES beamline

Research Contents / Beamlines / GALAXIES: IXS - HAXPES

The GALAXIES beamline is dedicated to inelastic x-ray scattering (IXS) and hard x-ray photoemission (HAXPES). These spectroscopic techniques are powerful probes to characterize the electronic properties of materials. The beamline is optimized to operate in the 2.3 et 12 keV energy range with high resolution and micro beam.

Characterization of the electronic properties of a functionalized oxides interface

Ferroelectric memories - in which information is coded within the direction of the electric polarization – are energy saving, durable and very fast electronic devices already commercially available. However, reading the information necessitates an auxiliary electronic circuit which limits the miniaturization of such systems at the nanometric scale. Researchers are thus looking towards systems where ferroelectric polarization allows manipulating the physical binary state of an oxide, easier to decode. But how the interface between the ferroelectric and the oxide behaves remain poorly known, which limits our understanding of the real abilities of these devices. A study led by scientists from the GALAXIES beamline at SOLEIL, the ALS synchrotron in Berkeley, the laboratoire Physique du Solide d’Orsay and the Unité Mixte de Physique CNRS/THALES de Palaiseau, has recently been published in Nano Letters, and presents a novel way to characterize these interfaces. [Full story]

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Beamline description

GALAXIES is an undulator beamline dedicated to hard x-ray spectroscopy. The main experimental techniques are:
- Inelastic x-ray scattering (IXS)
- Hard x-ray photoemission spectroscopy (HAXPES)
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Good reasons for using hard X-ray photoemission spectroscopy

July 2011: First XAS spectra

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