Regensburg 2013 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 40: Poster Session Correlated Electrons

TT 40.17: Poster

Mittwoch, 13. März 2013, 15:00–19:00, Poster D

Preparation of SrIrO₃ thin films by using metal-organic aerosol deposition technique — •Sebastian Esser, Melanie Schneider, Vasily Moshnyaga, and Philipp Gegenwart — 1. Physikalisches Institut, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany

The interplay between spin-orbit coupling and electronic correlations could lead to interesting novel states in iridium oxide materials. We focus on the perovskite phase of SrIrO₃ because Moon et al. [1] showed by using optical spectroscopy and first-principles calculations that the last member of the Ruddlesden-Popper series Sr_n+1Ir_nO_3n+1 (n=∞) is close to the Mott transition. By using metal-organic aerosol deposition technique we have grown SrIrO₃ thin films on (111)-oriented SrTiO₃ substrates. The cubic symmetry of the SrTiO₃ substrate ensured that the SrIrO₃ thin film grew in the monoclinic perovskite phase [1,2]. The X-ray diffraction results suggest that SrIrO₃ thin films in perovskite structure were obtained and these show out of plane epitaxy with monoclinic (002)_m-orientation. The temperature dependence of the electrical resistivity of these SrIrO₃ thin films were investigated and metallic behavior was observed down to 50 K.

This work is supported by the German Science foundation through SFB 602, TP A19.
[1] S. J. Moon et al., Phys. Rev. Lett. 101 226402 (2008)
A. Sumi et al., Thin Solid Films 486, 182 (2005)