Fine structure on flat surfaces of quasicrystalline Al-Pd-Mn

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1999-12-01
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Shen, Z.
Stoldt, C.
Jenks, Cynthia
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Lograsso, Thomas
Ames Laboratory Division Director
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Chemistry

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We have analyzed the fine structure revealed by scanning tunneling microscopy for a flat (within 0.8 Å) fivefold surface of i-Al-Pd-Mn. Even though features in the image appear to be arranged randomly, self-similar features are separated by distinct distances. The distribution of such distances is compatible with the separations between pseudo-Mackay icosahedra tangent to the topmost layer, and with separations between other cluster-based units. We propose that the fine structure is due to electronic structure imposed by the clusters.

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This article is from Physical Review B 60, no. 21 (1999): 14688–14694, doi:10.1103/PhysRevB.60.14688.

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Fri Jan 01 00:00:00 UTC 1999
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