TY - JOUR
T1 - Evolution of a liquid-like fluid phase on Ge/Au(111) at room temperature
T2 - A direct observation by STM
AU - Wakabayashi, Yousuke
AU - Hashiguchi, Kouhei
AU - Inase, Yousuke
AU - Kamiko, Masao
AU - Kyuno, Kentaro
N1 - Funding Information:
This work was partly supported by the JSPS KAKENHI Grant Nos. 25289231 and 15K14130.
Publisher Copyright:
© 2017 Author(s).
PY - 2017/12/25
Y1 - 2017/12/25
N2 - 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.
AB - 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.
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U2 - 10.1063/1.5006684
DO - 10.1063/1.5006684
M3 - Article
AN - SCOPUS:85040037780
SN - 0003-6951
VL - 111
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 26
M1 - 261601
ER -