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Proceedings Paper

Surface effects in ultrafast optical phenomena of perovskite oxide thin films (Conference Presentation)

Paper 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.

Paper Details

Date Published: 10 March 2020
Proc. SPIE 11278, Ultrafast Phenomena and Nanophotonics XXIV, 112781I (10 March 2020); doi: 10.1117/12.2543990
Show Author Affiliations
Saeed Yousefi Sarraf, West Virginia Univ. (United States)
Sobhit Singh, Rutgers Univ. (United States)
West Virginia Univ. (United States)
Andrés Camilo Garcia-Castro, Univ. Industrial de Santander (Colombia)
Robbyn Trappen, West Virginia Univ. (United States)
Navid Mottaghi, West Virginia Univ. (United States)
Guerau Cabrera, West Virginia Univ. (United States)
Chih-Yeh Huang, West Virginia Univ. (United States)
Shalini Kumari, West Virginia Univ. (United States)
Ghadendra Bhandari, West Virginia Univ. (United States)
Alan Bristow, West Virginia Univ. (United States)
Aldo Romero, West Virginia Univ. (United States)
Mikel Holcomb, West Virginia Univ. (United States)

Published in SPIE Proceedings Vol. 11278:
Ultrafast Phenomena and Nanophotonics XXIV
Markus Betz; Abdulhakem Y. Elezzabi, Editor(s)

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