Effects of the deposition rate on growth modes of Ag islands on the hydrogen-terminated Si(111)-(1 × 1) surface: The role of surface energy and quantum size effect

Jungmin Kang, Toyoaki Eguchi, Erina Kawamoto, Stephane Yu Matsushita, Kenya Haga, Shino Kanagawa, Andrzej Wawro, Ryszard Czajka, Hiroki Kato, Shozo Suto

研究成果: Article査読

2 被引用数 (Scopus)

抄録

We have investigated the early stage of Ag island growth at 2 monolayer (ML) coverage on the hydrogen-terminated Si(111)-(1 × 1) surface using low-energy electron-diffraction (LEED) and scanning tunneling microscopy (STM) at room temperature. First, it is found that the Ag(10) LEED pattern varies from arc-like spots to three spots by changing the Ag deposition rate from 1.0×10-1 (a fast deposition rate) to 1.1×10-4 (a slow deposition rate) ML/s. Second, STM observation reveals that adsorbed Ag atoms grow into dome-like three dimensional (3D) clusters at the fast deposition rate and flat-top two dimensional (2D) islands at the slow deposition rate. Third, most abundant 2D islands show the 8 atomic layer height, which coincides with that obtained from the quantum size effect. The side structures of 2D islands agree well with those calculated from Wulff theory. We will discuss the exact nature of 3D clusters and 2D islands of Ag grown on the hydrogen-terminated Si(111)-(1 × 1) surface and these results indicate the possibility of using kinetic controlled growth to investigate the physics of crystal growth.

本文言語English
論文番号095303
ジャーナルJournal of Applied Physics
122
9
DOI
出版ステータスPublished - 2017 9 7

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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