Document Type

Article

Publication Date

2005

Journal or Book Title

Physical Review B

Volume

72

Issue

22

First Page

220201

DOI

10.1103/PhysRevB.72.220201

Abstract

Decagonal quasicrystals are made of pairs of atomic planes with pentagonal symmetry periodically stacked along a 10-fold axis. We have investigated the atomic structure of the 2-fold surface of a decagonal Al-Ni-Co quasicrystal using scanning tunneling microscopy. The surface consists of terraces separated by steps of heights 1.9, 4.7, 7.8, and 12.6 Å containing rows of atoms parallel to the 10-fold direction with an internal periodicity of 4 Å. The rows are arranged aperiodically, with separations that follow a Fibonacci sequence and inflation symmetry. The results indicate that the surfaces are preferentially Al-terminated and in general agreement with bulk models.

Comments

This article is from Physical Review B 72, no. 22 (2005): 220201, doi:10.1103/PhysRevB.72.220201.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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