Grazing-angle reflectivity setup for the low-temperature infrared spectroscopy of two-dimensional systems - Archive ouverte HAL
Article Dans Une Revue Journal of Synchrotron Radiation Année : 2019

Grazing-angle reflectivity setup for the low-temperature infrared spectroscopy of two-dimensional systems

Résumé

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 LaAlO 3 and its SrTiO 3 substrate, and to determine its Drude parameters.

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Cristallographie
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Dates et versions

hal-02884801 , version 1 (30-06-2020)

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Marine Verseils, Alexandre Voute, Benjamin Langerome, Maxime Deutsch, Jean-Blaise Brubach, et al.. Grazing-angle reflectivity setup for the low-temperature infrared spectroscopy of two-dimensional systems. Journal of Synchrotron Radiation, 2019, 26, pp.1945 - 1950. ⟨10.1107/S1600577519010920⟩. ⟨hal-02884801⟩
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