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Regensburg 2019 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 14: Poster

DS 14.30: Poster

Dienstag, 2. April 2019, 17:00–20:00, Poster E

Investigations of LaVO3 and PrVO3 thin films by Raman spectroscopy and ellipsometrySimon Brehm1, •Cameliu Himcinschi1, Ionela Lindfors-Vrejoiu2, Kumar Deepak3, Wilfrid Prellier3, and Jens Kortus11Institute of Theoretical Physics, TU Bergakademie Freiberg, 09596 Freiberg, Germany — 2II. Physikalisches Institut, Universität zu Köln, D-50937, Germany — 3Laboratoire CRISMAT, CNRS-ENSICAEN, F-14050 Caen, France

In this work, 3d transition metal vanadates (LaVO3 and PrVO3) thin films grown by pulsed-laser deposition on different crystalline substrates (DyScO3, LSAT, LaGaO3, SrTiO3) were investigated. The phase transition to orbital ordering of the films was evaluated by Raman spectroscopy. For this purpose, temperature-dependent measurements were carried out in a range of 90 K to 300 K using 633 nm laser line as excitation. The dependence of the orbital ordering on the film orientation on the different substrates was addressed. Additionally, spectroscopic ellipsometry was used to determine the optical constants of the LaVO3 and PrVO3 thin films at room temperature.

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