Identification of single-layer metallic structure of indium on Si(1?1?1)
Identification of single-layer metallic structure of indium on Si(1?1?1)
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Si(1?1?1)上铟单层金属结构的识别
DOI：
10.1088/1361-648x/aad7c5
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Aruga Tetsuya
中科院分区：
文献类型：
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作者：
Terakawa Shigemi;Hatta Shinichiro;Okuyama Hiroshi;Aruga Tetsuya
用低能电子衍射（LEED）和角分辨光电子能谱（ARPES）研究了In/Si（111）（）-六角相和条纹相。这两个相由不同的过程形成，因此传统上使用不同的名称。然而，我们发现这两个相的LEED I曲线彼此一致，表明它们具有相同的原子结构。我们的ARPES测量表明，（）-六方相具有金属表面态。观察到的费米表面被发现是非常相似的理论计算的铟单层模型。
We have studied the In/Si (1 1 1)()-hex and striped phases by low-energy electron diffraction (LEED) and angle-resolved photoelectron spectroscopy (ARPES). The two phases are formed by different processes, and hence the different names have been used conventionally. We, however, found that LEED I–curves of the two phases agree with each other, indicating that they have an identical atomic structure. Our ARPES measurement revealed that the ()-hex phase has metallic surface states. The observed Fermi surface was found to be very similar to the theoretical one calculated for an indium single-layer model.