Open AccessGrazing‐angle reflectivity setup for the low‐temperature infrared spectroscopy of two‐dimensional systems
Author(s) -
Verseils Marine,
Voute Alexandre,
Langerome Benjamin,
Deutsch Maxime,
Brubach Jean-Blaise,
Kalaboukhov Alexei,
Nucara Alessandro,
Calvani Paolo,
Roy Pascale
Publication year - 2019
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s1600577519010920
Subject(s) - infrared , materials science , synchrotron radiation , drude model , substrate (aquarium) , liquid helium , optics , spectroscopy , reflectivity , infrared spectroscopy , optoelectronics , absorption (acoustics) , thin film , helium , chemistry , atomic physics , nanotechnology , physics , oceanography , organic chemistry , quantum mechanics , geology
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.