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Journal Article

Electronic valence bands in decagonal Al-Ni-Co

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Theis,  Wolfgang
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Horn,  Karsten
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Fulltext (public)

PhysRevB.68.104205.pdf
(Publisher version), 339KB

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Citation

Theis, W., Rotenberg, E., Franke, K. J., Gille, P., & Horn, K. (2003). Electronic valence bands in decagonal Al-Ni-Co. Physical Review B, 68(10), 104205-1-104205-4. doi:10.1103/PhysRevB.68.104205.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0011-0F03-7
Abstract
Valence-band photoemission from the s-p region of the tenfold and the two inequivalent twofold surfaces of quasicrystalline decagonal Al71.8Ni14.8Co13.4 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.