Dresden 2017 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

O: Fachverband Oberflächenphysik

O 48: Oxide and Insulator Surfaces: Structure, Epitaxy and Growth

O 48.3: Poster

Dienstag, 21. März 2017, 18:30–20:30, P1A

High quality surfaces of perovskite oxides for photoemission spectroscopy — •Marten Düvel, Marius Keunecke, Sabine Steil, Daniel Steil, Vasily Moshnyaga, and Stefan Mathias — Georg-August-Universität Göttingen

In correlated materials, e.g., perovskite oxides, the overall behavior is governed by the interaction between charge, spin, orbit and lattice degrees of freedom. We plan to follow energy conversion processes in perovskite oxides, after optical excitation, using different time-resolved spectroscopy techniques. As a first step, La_0,3Sr_0,7MnO₃ thin films were prepared by metalorganic aerosol deposition (MAD) technique on SrTiO₃ (001) substrates and characterized by XRR, XRD, AFM, STM, SQUID, PPMS and SEM. From these oxide materials, we evaluate different methods to obtain high quality surfaces under ultra-high vacuum conditions, suitable for surface-sensitive methods like low-energy electron diffraction (LEED) and spin-,time- and angle-resolved photoemission spectroscopy (trARPES). Financial support of the SFB 1073 (TPB07) is acknowledged.