Abstract
Valence-band photoemission from the s-p region of the tenfold and thetwo inequivalent twofold surfaces of quasicrystalline decagonalAl71.8Ni14.8Co13.4 reveals strongly dispersing bands. These exhibit afree-electron-like dispersion along quasiperiodic and periodicdirections of the decagonal quasicrystal. The experimental photoemissionmaps are reproduced in detail by a model in which parabolic bandsemanate from a set of reciprocal lattice vectors. A parity rule for theprincipal zone centers is observed.
Dokumententyp: | Zeitschriftenartikel |
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Fakultät: | Geowissenschaften > Department für Geo- und Umweltwissenschaften > Kristallographie und Materialwissenschaft |
Themengebiete: | 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften, Geologie |
Sprache: | Englisch |
Dokumenten ID: | 18564 |
Datum der Veröffentlichung auf Open Access LMU: | 10. Mrz. 2014, 14:10 |
Letzte Änderungen: | 04. Nov. 2020, 13:00 |