First UHV surface studies of single-grain icosahedral Ag-In-Yb quasicrystal

H. R. Sharma, M. Shimoda, S. Ohhashi, A. P. Tsai

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

We present the first ultrahigh vacuum (UHV) surface study of single-grain icosahedral Ag-In-Yb quasicrystal by using X-ray photoelectron spectroscopy (XPS), reflection high-energy electron diffraction (RHEED), and scanning tunnelling microscopy (STM). This new quasicrystal is found to exhibit surfaces with steps and terraces, upon suitable preparation conditions. The Fourier transform of high-resolution STM images and RHEED patterns reveal that the surface after annealing at appropriate temperatures retains quasicrystalline long-range order. The analysis of XPS data measured from this surface shows a near bulk chemical composition in the surface region.

Original languageEnglish
Pages (from-to)2989-2994
Number of pages6
JournalPhilosophical Magazine
Volume87
Issue number18-21
DOIs
Publication statusPublished - 2007 Jul 1

ASJC Scopus subject areas

  • Condensed Matter Physics

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