Regensburg 2016 – wissenschaftliches Programm
DS 12.17: Poster
Montag, 7. März 2016, 17:00–19:00, Poster A
Raman spectroscopic investigations of Sr2IrO4 epitaxial thin films — •Cameliu Himcinschi1, Chengliang Lu2, Jens Kortus1, and Marin Alexe3 — 1TU Bergakademie Freiberg, Institute of Theoretical Physics, D-09596 Freiberg, Germany — 2Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle, Germany — 3Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom
5d material systems, as Sr2IrO4 oxides, have interesting properties due to the strong spin-orbit coupling. Epitaxial Sr2IrO4 thin films were grown on SrTiO3, DyScO3 and LaAlO3 substrates by pulsed laser deposition. The films were investigated using temperature dependent Raman spectroscopy. The larger compressive strain of the film deposited on LaAlO3 induced a blue shift of the Sr2IrO4 Raman active modes. On the other hand, by using different excitation wavelengths the conditions for resonant Raman effect in Sr2IrO4 material have been probed.