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

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

Research output: Contribution to journalArticle

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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