Asymmetric pentagonal cluster on an Al-Cu-Co quasicrystal surface

R. Zenkyu, T. Matsui, A. P. Tsai, J. Yuhara

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    The 10-fold surface of a decagonal Al66Cu17Co 17 quasicrystal has been studied by scanning tunneling microscopy (STM). Three kinds of characteristic pentagonal clusters are observed in the STM images. Clusters within a given terrace have the same orientation, while those in adjacent terraces have opposite orientations. We show that two of the pentagonal cluster types are part of the 2-nm cluster, which is considered to be the basic structural unit of the Al-Cu-Co quasicrystal. The local atomic arrangement in the 2-nm clusters is found to be asymmetric.

    Original languageEnglish
    Pages (from-to)2854-2861
    Number of pages8
    JournalPhilosophical Magazine
    Volume91
    Issue number19-21
    DOIs
    Publication statusPublished - 2011 Jul 1

    Keywords

    • Al-Cu-Co
    • cluster-assembled materials
    • quasicrystals
    • scanning probe microscopy
    • structure analysis
    • surface analysis

    ASJC Scopus subject areas

    • Condensed Matter Physics

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