Observing structural distortions in complex oxides by x-ray photoelectron diffraction

• DOI: 10.1016/j.elspec.2022.147201
• Publication Date: 2022-04-21T15:48:52Z
• Authors: Rosa Luca Bouwmee...; Thies Jansen; Marieke Altena; Gertjan Koster; Alexander Brinkman
• Keywords: Distortion (music)

The observation of structural distortions in complex oxides is becoming more important order to explain their macroscopic behavior. X-ray photoelectron diffraction an excellent technique study the crystal structure and potentially observe oxygen element-specific fashion. Its surface-sensitive character opens up possibility perform experiments on ultra-thin films without probing substrate underneath. For BaBiO3 thin films, for example recent experimental results point towards a suppression breathing mode with decreasing film thickness resulting decreased energy band gap. As another example, nontrivial electronic predicted [111]-bilayers LaMnO3. However, likely presence Jahn–Teller distortion would suppress topological phase. Here, working principle x-ray described data analysis required afterwards discussed. interference patterns are obtained various thicknesses LaMnO3 films. Experimental compared multiple-scattering simulations. Although, indications observed, we discuss limitations quantifying displacement atoms.