Evolution of a liquid-like fluid phase on Ge/Au(111) at room temperature: A direct observation by STM

被引：2
|
作者：
Wakabayashi, Yousuke [1 ]
Hashiguchi, Kouhei [1 ]
Inase, Yousuke [1 ]
Kamiko, Masao [2 ]
Kyuno, Kentaro [1 ,3 ]
机构：
[1] Shibaura Inst Technol, Dept Mat Sci, Koto Ku, 3-7-5 Toyosu, Tokyo 1358548, Japan
[2] Univ Tokyo, Inst Ind Sci, Meguro Ku, 4-6-1 Komaba, Tokyo 1538505, Japan
[3] Shibaura Inst Technol, Res Ctr Green Innovat, Koto Ku, 3-7-5 Toyosu, Tokyo 1358548, Japan
来源：
APPLIED PHYSICS LETTERS | 2017年 / 111卷 / 26期
关键词：
EUTECTIC TEMPERATURE; NANOWIRE GROWTH; SOLID NANOWIRE; AU-GE; GERMANIUM;
D O I：
10.1063/1.5006684
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The evolution of a Au(111) surface after deposition of a submonolayer amount of Ge atoms has been investigated by STM. Diffusion and incorporation of Ge atoms into Au are active at room temperature where only negligible solubility is expected at equilibrium. It turned out that this surface phase is fluid, where the migration of step edges and successive appearance and disappearance of monolayer islands on the surface are confirmed. These phenomena seem to imply the weakening of the bonding strength between Au atoms by Ge incorporation and could be playing an important role in the low temperature crystallization process of Ge nanowires and thin films using Au as a catalyst. Published by AIP Publishing.
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页数：5
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