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New Lutetium Oxide: Electrically Conducting Rock-Salt LuO Epitaxial Thin Film

[Image: see text] C-rare earth structure lutetium sesquioxide Lu(2)O(3) has been recognized as a high-k widegap insulator with closed shell Lu(3+) ions. In this study, rock-salt structure lutetium monoxide LuO with unusual valence of Lu(2+) (4f(14)5d(1)), previously known as the gaseous phase, was s...

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Detalles Bibliográficos
Autores principales: Kaminaga, Kenichi, Oka, Daichi, Hasegawa, Tetsuya, Fukumura, Tomoteru
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2018
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6644888/
https://www.ncbi.nlm.nih.gov/pubmed/31457982
http://dx.doi.org/10.1021/acsomega.8b02082
Descripción
Sumario:[Image: see text] C-rare earth structure lutetium sesquioxide Lu(2)O(3) has been recognized as a high-k widegap insulator with closed shell Lu(3+) ions. In this study, rock-salt structure lutetium monoxide LuO with unusual valence of Lu(2+) (4f(14)5d(1)), previously known as the gaseous phase, was synthesized as an epitaxial thin film by the pulsed laser deposition method. In contrast with transparent and highly insulating Lu(2)O(3), LuO possessed a dark-brown color and high electrical conductivity concomitant with strong spin–orbit coupling as a manifestation of Lu 5d electron carriers.