Low‐energy electron diffraction study of atomic structure of Sc–O/W(100) surface acting as Schottky emitter at high temperatures
Low‐energy electron diffraction study of atomic structure of Sc–O/W(100) surface acting as Schottky emitter at high temperatures
复制标题
高温下肖特基发射极Sc-O/W(100)表面原子结构的低能电子衍射研究
DOI：
10.1002/sia.1483
复制
发表时间：
2003
影响因子：
1.7
通讯作者：
Y. Takai
中科院分区：
文献类型：
--
作者：
S. Iida;T. Tsujita;T. Nagatomi;Y. Takai
Low‐energy electron diffraction (LEED) was used to investigate the atomic structure of an Sc–O/W(100) surface acting as a Schottky emitter in order to elucidate a marked reduction in the work function of the Sc–O/W(100) Schottky emitter surface. The results of our LEED observation of the Sc–O/W(100) surface at room temperature revealed that a p(2 × 1) and p(1 × 2) double‐domain structure is formed on the surface. This reconstructed structure exhibited no changes when heated to 1400 K, and continued to remain stable even when held at 1400 K. These results strongly suggest that the p(2 × 1) and p(1 × 2) double‐domain structure is formed by scandium–oxygen electric dipoles on the W(100) surface, leading to a marked reduction in the work function of the Sc–O/W(100) surface at the operating temperature of the Sc–O/W(100) Schottky emitter. Copyright © 2003 John Wiley & Sons, Ltd.
