Structure of the Fivefold Surface of the Icosahedral Al-Cu-Fe Quasicrystal: Experimental Evidence of Bulk Truncations at Larger Interlayer Spacings

Date
2004-10-14
Authors
Sharma, H.
Lograsso, Thomas
Fournée, V.
Shimoda, M.
Ross, A.
Lograsso, Thomas
Tsai, A. P.
Yamamoto, A.
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Abstract

Based on scanning tunneling microscopy of the fivefold surface of the icosahedral Al-Cu-Fe quasicrystal and the refined structure model of the isostructural i-Al-Pd-Mn, we present evidence that the surface corresponds to bulk truncations at the positions where blocks of atomic layers are separated by larger interlayer spacings (gaps). Both step-height distribution and high resolution scanning tunneling microscopy images on terraces reveal bulk truncations at larger gaps.

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This article is from Physical Review Letters 93 (2004): 165502, doi:10.1103/PhysRevLett.93.165502.

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