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

Kenichi Kaminaga | Zendy; Daichi Oka | Zendy; Tetsuya Hasegawa | Zendy; Tomoteru Fukumura | Zendy

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

Author(s) -

Kenichi Kaminaga,

Daichi Oka,

Tetsuya Hasegawa,

Tomoteru Fukumura

Publication year - 2018

Publication title -

acs omega

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 0.779

H-Index - 40

ISSN - 2470-1343

DOI - 10.1021/acsomega.8b02082

Subject(s) - lutetium , epitaxy , materials science , salt (chemistry) , oxide , thin film , optoelectronics , composite material , nanotechnology , chemistry , metallurgy , layer (electronics) , yttrium

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.

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