Electronic valence bands in decagonal Al-Ni-Co

Theis, W.; Rotenberg, E.; Franke, K. J.; Gille, Peter und Horn, K. (2003): Electronic valence bands in decagonal Al-Ni-Co. In: Physical Review B - Condensed Matter and Materials Physics, Bd. 68, Nr. 10: S. 1042051-1042054

Abstract

Valence-band photoemission from the s-p region of the tenfold and the two inequivalent twofold surfaces of quasicrystalline decagonal Al 72.8Ni14.8Co13.4 reveals strongly dispersing bands. These exhibit a free-electron-like dispersion along quasiperiodic and periodic directions of the decagonal quasicrystal. The experimental photoemission maps are reproduced in detail by a model in which parabolic bands emanate from a set of reciprocal lattice vectors. A parity rule for the principal zone centers is observed.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Geowissenschaften > Department für Geo- und Umweltwissenschaften > Kristallographie und Materialwissenschaft
• Themengebiete: 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften, Geologie
• Sprache: Englisch