Data for Dimensionality-driven metal-insulator transition in spin-orbit-coupled IrO2

All the experiments have been carried out on thin films of IrO2, the thickness and crystallinity of the each film being specified in each file. X-ray reflectivity (XRR) and X-ray diffraction measurements (XRD) were performed by using Bruker D8 and Rigaku D/max-2500 diffractometers, respectively, by using the Ka radiation line of copper. The electrical resistivity was measured using the four points van der Pauw method by means of a Quantum Design PPMS-9T with no applied magnetic field and with a small electric current (0.1 mA). Magnetization measurements were carried out by using a commercial SQUID magnetometer from Quantum Design. Magnetization versus temperature data were collected from 5 to 350 K with a heating rate of 5 K/min at 1000 Oe. High-energy resolution fluorescence detected X-ray absorption spectroscopy (HERFD-XANES) measurements were carried out at RT by using a beamline I20-Scanning at Diamond Light Source. More informacion can be found in https://doi.org/10.1107/S1600577518008974. X-ray magnetic circular dichroism (XMCD) measurements were carried out at beamline 4-ID-D of the Advanced Photon Source, Argonne National Laboratory. Measurements were done in a cryomagnet with the sample cooled with 4He vapor. A 500 micron thick diamond phase plate was used to generate circularly polarized X-rays and XMCD measurements were carried out in helicity-switching mode. Measurements were done in fluorescence mode using a grazing incidence geometry and an energy dispersive 4-element Si drift diode detector placed at 90 degrees relative to the incident beam direction. XMCD Data were collected at 10 K with the magnetic fields along and opposite the X-ray propagation direction to remove any artifacts of nonmagnetic origin.