新型氧化镥：具有导电性能的岩盐结构LuO外延薄膜。
New Lutetium Oxide: Electrically Conducting Rock-Salt LuO Epitaxial Thin Film.
作者信息
Kaminaga Kenichi, Oka Daichi, Hasegawa Tetsuya, Fukumura Tomoteru
机构信息
Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan.
WPI-Advanced Institute for Materials Research and Core Research Cluster, and Center for Spintronics Research Network, Tohoku University, Sendai 980-8577, Japan.
出版信息
ACS Omega. 2018 Oct 3;3(10):12501-12504. doi: 10.1021/acsomega.8b02082. eCollection 2018 Oct 31.
C-rare earth structure lutetium sesquioxide LuO has been recognized as a high- widegap insulator with closed shell Lu ions. In this study, rock-salt structure lutetium monoxide LuO with unusual valence of Lu (4f5d), 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 LuO, LuO possessed a dark-brown color and high electrical conductivity concomitant with strong spin-orbit coupling as a manifestation of Lu 5d electron carriers.
具有C型稀土结构的三氧化二镥（Lu₂O₃）被认为是一种具有闭壳层镥离子的高宽带隙绝缘体。在本研究中，通过脉冲激光沉积法合成了具有不寻常镥价态（4f⁵d）的岩盐结构一氧化镥（LuO），该结构以前已知存在于气相中，此次被合成成外延薄膜。与透明且高度绝缘的Lu₂O₃不同，LuO呈现深棕色且具有高电导率，并伴有强自旋 - 轨道耦合，这是Lu 5d电子载流子的一种表现。
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