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Formation of a Stable Decagonal Quasicrystalline Al-Pd-Mn Surface Layer
Auteur(s)
Naumovic, D.
Aebi, Philipp
Schlapbach, Louis
Beeli, C.
Kunze, K.
Lograsso, T. A.
Delaney, D. W.
Date de parution
2001
In
Physical Review Letters, American Physical Society (APS), 2001/87/195506/1-4
Résumé
We report the <i>in situ</i> formation of an ordered equilibrium decagonal Al-Pd-Mn quasicrystal overlayer on the fivefold 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.
Identifiants
Type de publication
journal article
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