Structure of the Ag/Si(111) surface by scanning tunneling microscopy.
Structure of the Ag/Si(111) surface by scanning tunneling microscopy.
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通过扫描隧道显微镜观察 Ag/Si(111) 表面的结构。
DOI：
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发表时间：
1987
影响因子：
8.6
通讯作者：
S. Chiang
中科院分区：
文献类型：
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作者：
R. Wilson;S. Chiang
我们提出了第一个实空间图像，通过扫描隧道显微镜，其中显示了有序的原子结构的Ag/Si（111）表面的几个亚单层覆盖。（ensuremath{surd}3 ifmmode 伊梅塞尔 exttimesfi{} ensuremath{surd}3）R30 ifmmode ^circelse extdegreefi{}表面显示为蜂窝结构，并且确定室温覆盖率为θ =（2/3）。1ifmmode（1ifmmode） 伊梅塞尔 3）覆盖层主要由被两个空行隔开的Ag原子行组成。在低覆盖率下，表面显示长距离7ifm模式 伊梅塞尔 exttimesfi{}7顺序，但修补程序发生在7ifmmode中 伊梅塞尔 在没有Si吸附原子的情况下，可得到17个细胞。
We present the first real-space images, obtained by scanning tunneling microscopy, which show the ordered atomic structures of the Ag/Si(111) surface for several submonolayer coverages. The (ensuremath{surd}3 ifmmode imeselse exttimesfi{} ensuremath{surd}3 )R30ifmmode^circelse extdegreefi{} surface is shown to be of the honeycomb structure, and the room-temperature coverage is determined to be theta=(2/3). The (1ifmmode imeselse exttimesfi{}3) overlayer consists predominantly of rows of Ag atoms separated by two empty rows. At low coverage the surface shows long-range 7ifmmode imeselse exttimesfi{}7 order, but patches occur within the 7ifmmode imeselse exttimesfi{}7 cells whree Si adatoms are absent.