کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5426148 | 1395878 | 2007 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Spectroscopic interpretation for Na-induced phase transitions on Na/Si(1 1 1)3 Ã 1 Spectroscopic interpretation for Na-induced phase transitions on Na/Si(1 1 1)3 Ã 1](/preview/png/5426148.png)
Na adsorption at room temperature causes the Na/Si(1Â 1Â 1)3Â ÃÂ 1 surface with Na coverage of 1/3 monolayer (ML) to transit into the Na/Si(1Â 1Â 1)6Â ÃÂ 1 surface at 1/2Â ML and sequentially into the Na/Si(1Â 1Â 1)3Â ÃÂ 1 surface at 2/3Â ML. The phase transition was studied by Si 2p core-level photoemission spectroscopy. The detailed line shape analysis of the Si 2p core-level spectrum of the Na/Si(1Â 1Â 1)3Â ÃÂ 1 surface (2/3Â ML) is presented and compared to the Na/Si(1Â 1Â 1)3Â ÃÂ 1 surface (1/3Â ML) which is composed of Si honeycomb chain-channel structures. This suggests that as additional Na atoms form atomic chains resulting in the Na/Si(1Â 1Â 1)3Â ÃÂ 1 surface (2/3Â ML), the inner atoms of the Si honeycomb chain-channel structure is buckled due to the additional Na atoms.
Journal: Surface Science - Volume 601, Issue 2, 15 January 2007, Pages 390-394