オノダ　ジョウ   小野田　穣    所属   福岡教育大学  教育学部 理科教育研究ユニット    職種   講師
言語種別	英語
発行・発表の年月	2014/04
形態種別	研究論文
査読	査読あり
標題	Initial and secondary oxidation products on the Si(111)-(7×7) surface identified by atomic force microscopy and first principles calculations
執筆形態	共著
掲載誌名	Applied Physics Letters
掲載区分	国外
出版社・発行元	American Institute of Physics
巻・号・頁	104,pp.133107
総ページ数	4
担当区分	筆頭著者,責任著者
国際共著	国際共著
著者・共著者	Jo Onoda, Martin Ondráček, Ayhan Yurtsever, Pavel Jelínek , Yoshiaki Sugimoto
概要	We investigate the initial and secondary oxidation products on the Si(111)-(7 × 7) surface at room-temperature using atomic force microscopy (AFM) and density functional theory calculations. At the initial oxidation stages, we find that there are two types of bright spots in AFM images. One of them is identified as a Si adatom with one O atom inserted into one of the backbonds, while the other is ascribed to a Si adatom with two inserted O atoms. We observe that the latter one turns into the secondary oxidation product by a further coming O2 molecule, which appears as a more protruded bright spot. The atomic configuration of this product is identified as Si adatom whose top and all three backbonds make bonds with O atoms.
DOI	10.1063/1.4870629