Structural evolution of Bi thin films on Au(111) revealed by scanning tunneling microscopy

Naoya Kawakami*, Chun-Liang Lin, Kazuaki Kawahara, Maki Kawai, Ryuichi Arafune, Noriaki Takagi

*此作品的通信作者

研究成果: Article同行評審

21 引文 斯高帕斯(Scopus)

摘要

We present the structural evolution of Bi on Au(111) from monolayer to multilayer regimes explored mainly by scanning tunneling microscopy. At the monolayer regime, Bi clusters distribute homogeneously to make an array with 5×5 periodicity. Further increase of the coverage converts these clusters to the two-dimensional periodic (37×37)R25.3â and (p×3) structures. We propose a model of the (37×37)R25.3â structure based on the STM measurements and density-functional theory calculations. In the multilayer regime, superstructures at first appear with long-range periodicities arising from the moiré structures due mainly to the stacking of Bi layers. Then, the thicker films grow whose lattice constants are close to those of the (110) surface of rhombohedral Bi crystal. The Bi(110) films of more than 60 layers grow stably. Thus, this system provides a good stage for further investigation of the peculiar electronic properties of Bi(110).

原文English
文章編號205402
頁(從 - 到)1-9
頁數9
期刊Physical Review B
96
發行號20
DOIs
出版狀態Published - 15 11月 2017

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