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DS: Fachverband Dünne Schichten

DS 12: Postersession DS

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.