Presentation
10 March 2020 Surface effects in ultrafast optical phenomena of perovskite oxide thin films (Conference Presentation)
Author Affiliations +
Abstract
La0.7Sr0.3MnO3 is a strongly correlated complex oxide. There is limited information about La0.7Sr0.3MnO3 thin films’ transient reflectivity (TR), where differences in ultra-fast dynamics due to surface and interface effects are expected. By decreasing the film thickness, additional energy states emerge, providing extra relaxation channels. Due to the reduced absorption in thin films, observing the effects of these extra states in TR signal is challenging, especially in a hole doped system such as La0.7Sr0.3MnO3. Moreover, in lower thicknesses, sinusoidal behavior superimposed on the TR signal is not analyzable by Fourier transforms. Wavelet transforms are perfect tools to analyze these fast-vanishing oscillations.
Conference Presentation
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Saeed Yousefi Sarraf, Sobhit Singh, Andrés Camilo Garcia-Castro, Robbyn Trappen, Navid Mottaghi, Guerau Cabrera, Chih-Yeh Huang, Shalini Kumari, Ghadendra Bhandari, Alan Bristow, Aldo Romero, and Mikel Holcomb "Surface effects in ultrafast optical phenomena of perovskite oxide thin films (Conference Presentation)", Proc. SPIE 11278, Ultrafast Phenomena and Nanophotonics XXIV, 112781I (10 March 2020); https://doi.org/10.1117/12.2543990
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KEYWORDS
Thin films

Ultrafast phenomena

Optical properties

Oxides

Perovskite

Carrier dynamics

Interfaces

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