工作职能
扫描隧道显微镜
沉积(地质)
工作(物理)
量子隧道
曲面(拓扑)
材料科学
功能(生物学)
分子物理学
化学物理
化学
凝聚态物理
分析化学(期刊)
纳米技术
物理
几何学
热力学
图层(电子)
古生物学
生物
进化生物学
色谱法
数学
沉积物
作者
Masaaki Komai,Masahiro Sasaki,Ryo Ozawa,Shigehiko Yamamoto
标识
DOI:10.1016/s0169-4332(99)00010-0
摘要
Microscopic `work function' is evaluated by local tunneling barrier height (LBH) measurements of clean and Ba-deposited Si(111) surfaces in order to clarify the mechanism of work function reduction by Ba deposition. Atomically resolved LBH images are obtained corresponding to scanning tunneling microscopy (STM) images. The difference in the LBH measurement for clean Si(111)-(7×7) and Ba deposited Si(111)-(3×1) surfaces agrees with macroscopic work function reduction due to Ba adsorbate. The result suggests that the work function is strongly related to the atomic arrangement of the Si(111) surface induced by Ba deposition.
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