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Submitted - 06 February 2022

Wednesday, May 25, 2022 at 6:30:00 PM UTC

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Combined Spectroscopy and Electrical Characterization of La: BaSnO3 Thin Films and Heterostructures

Arnaud P. Nono Tchiomo,1
"Acknolowdgement NA"

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nanaoparticle heterostrusture, Combined Spectroscopy, Electrical Characterization of La:BaSnO3, Electrical Characterization, Thin Films

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For La-doped BaSnO3 thin films grown by pulsed laser deposition, we combine chemical surface characterization and electronic transport studies to probe the evolution of electronic states in the band structure for different La-doping content. Systematic analyses of spectroscopic data based on fitting the core electron line shapes help to unravel the composition of the surface as well as the dynamics associated with increasing doping. These dynamics are observed with a more pronounced signature in the Sn 3d core level, which exhibits an increasing asymmetry to the high binding energy side of the peak with increasing electron density. Our results expand the current understanding of the interplay between the doping concentration, electronic band structure, and transport properties of epitaxial La: BaSnO3 films.