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Updated: Jan 3, 2026

Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures
Published on: October 9, 2012
Grazing-angle reflectivity setup for the low-temperature infrared spectroscopy of two-dimensional systems
Marine Verseils1, Alexandre Voute1, Benjamin Langerome1
1Synchrotron SOLEIL, St Aubin, 91192 Gif-sur-Yvette, France.
Abstract:
A new optical setup is described that allows the reflectivity at grazing incidence to be measured, including ultrathin films and two-dimensional electron systems (2DES) down to liquid-helium temperatures, by exploiting the Berreman effect and the high brilliance of infrared synchrotron radiation. This apparatus is well adapted to detect the absorption of a 2DES of nanometric thickness, namely that which forms spontaneously at the interface between a thin film of LaAlO3 and its SrTiO3 substrate, and to determine its Drude parameters.
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