Faculté des sciences

Quasicrystalline nature of quasicrystal surfaces: A photoemission study

Naumovic, D. ; Aebi, Philipp ; Schlapbach, Louis ; Beeli, C. ; Lograsso, T. A. ; Delaney, D. W.

In: Physical Review B, 1999, vol. 60, no. 24, p. R16330-R16333

Differently prepared surfaces of quasicrystalline i-Al-Pd-Mn are analyzed using angle-resolved photoemission in the x-ray and ultraviolet range of photon energies. Depending on the preparation, we find both surfaces with crystalline structure and metallic character, and surfaces with quasicrystalline structural fingerprints and a suppressed density of states at the Fermi level,... More

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    Summary
    Differently prepared surfaces of quasicrystalline i-Al-Pd-Mn are analyzed using angle-resolved photoemission in the x-ray and ultraviolet range of photon energies. Depending on the preparation, we find both surfaces with crystalline structure and metallic character, and surfaces with quasicrystalline structural fingerprints and a suppressed density of states at the Fermi level, compatible with a pseudogap.