Ordered mixed surface structures formed by coadsorption of dissimilar metal atoms on Cu(0 0 1)

Hiroshi Tochihara, Ming Shu Chen, Tetsuroh Shirasawa, Seigi Mizuno

    研究成果: ジャーナルへの寄稿会議記事査読

    5 被引用数 (Scopus)

    抄録

    We have found that various ordered mixed surface structures are formed by coadsorption of two dissimilar metal atoms on Cu(0 0 1) at room tepmerature, using low-energy electron diffraction (LEED) I-V analysis. As coadsorbates, we employed Mg, Bi, Li and K, and surface structures formed by the coadsorption systems of (Mg, Li), (Mg, K) and (Mg, Bi) are presented. A tensor LEED analysis provided detailed geometries of the coadsorbates and the substrate surface. It was found that the surface structures in the above three coadsorption sytems exhibit the restructuring of the Cu(0 0 1) surface. The phase separation into individual adsorbates does not take place, implying that some additional stabilization arises. We demonstrate two origins for the stabilization of the ordered mixed surface structures on Cu(0 0 1). Structures and features formed by the individual adsorption of Mg, Bi, Li and K atoms on Cu(0 0 1) are described first, then those of (2√2 × √2)R45°-Mg,Li, (√5 × √5)R26.7°-Mg,K, c(2 × 2)-Mg,Bi, and c(6 × 4)-Mg,Bi structures formed by the coadsorption are presented. We consider on the basis of the determined structural parameters the question why ordered mixed surface structures are formed instead of the phase separation.

    本文言語英語
    ページ(範囲)121-131
    ページ数11
    ジャーナルVacuum
    74
    2
    DOI
    出版ステータス出版済み - 5月 24 2004
    イベントProceedings of the International Workshop on Surface Physics - Polanica Zdroj, ポーランド
    継続期間: 9月 13 20039月 15 2003

    !!!All Science Journal Classification (ASJC) codes

    • 器械工学
    • 凝縮系物理学
    • 表面、皮膜および薄膜

    フィンガープリント

    「Ordered mixed surface structures formed by coadsorption of dissimilar metal atoms on Cu(0 0 1)」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

    引用スタイル