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Formation of a stable deacagonal quasicrystalline Al-Pd-Mn surface layer

D. Naumovic·P. Aebi·L. Schlapbach·C. Beeli·K. Kunze·T. A. Lograsso·D. W. Delaney
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Abstract

We report the in situ formation of an ordered equilibrium decagonal Al-Pd-Mn quasicrystal overlayer on the 5-fold symmetric surface of an icosahedral Al-Pd-Mn monograin. The decagonal structure of the epilayer is evidenced by x-ray photoelectron diffraction, low-energy electron diffraction and electron backscatter diffraction. This overlayer is also characterized by a reduced density of states near the Fermi edge as expected for quasicrystals. This is the first time that a millimeter-size surface of the stable decagonal Al-Pd-Mn is obtained, studied and compared to its icosahedral counterpart.

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D. Naumovic, P. Aebi, L. Schlapbach, C. Beeli, K. Kunze, T. A. Lograsso, D. W. Delaney. 2001-07-19. Formation of a stable deacagonal quasicrystalline Al-Pd-Mn surface layer. https://doi.org/10.1103/physrevlett.87.195506

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