| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Gille, P.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2016Using coupled micropillar compression and micro-Laue diffraction to investigate deformation mechanisms in a complex metallic alloy Al 13 Co 4
- 2015Physical properties of the GaPd 2 intermetallic catalyst in bulk and nanoparticle morphologycitations
- 2015The atomic structure of low-index surfaces of the intermetallic compound InPd
- 2015The atomic structure of low-index surfaces of the intermetallic compound InPdcitations
- 2015Structure of the monoclinic Al13Fe4(010) complex metallic alloy surface determined by low-energy electron diffractioncitations
- 2015C60 superstructure and carbide formation on the Al-terminated Al9Co2(001) surfacecitations
- 2014High temperature oxidation of AlCrFe complex metallic alloyscitations
- 2013Anomalous yielding in the complex metallic alloy Al 13 Co 4citations
- 2011Passivation and localised corrosion susceptibility of new Al-Cr-Fe complex metallic alloys in acidic NaCl electrolytescitations
- 2011Pseudomorphy, surface alloys and the role of elementary clusters on the domain orientations in the Cu/Al 13 Co 4 (100) systemcitations
- 2010Revealing the atomic surface structure of the (100) Y-Al-Ni-Co approximant by low-energy electron diffraction and scanning tunneling microscopycitations
- 2009Structure investigation of the (100) surface of the orthorhombic Al13Co4 crystalcitations
- 2009Structure investigation of the (100) surface of the orthorhombic Al 13 Co 4 crystalcitations
- 2008Growth of Bi thin films on quasicrystal surfacescitations
- 2000Quasicrystalline valence bands in decagonal AlNiCocitations
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article
Quasicrystalline valence bands in decagonal AlNiCo
Abstract
Quasicrystals are metallic alloys that possess perfect long-range structural order, in spite of the fact that their rotational symmetries are incompatible with long-range periodicity. The exotic structural properties of this class of materials1 are accompanied by physical properties that are unexpected for metallic alloys. Considerable progress in resolving the geometric structures of quasicrystals has been made using X-ray and neutron diffraction, and concepts such as the quasi-unit-cell model2 have provided theoretical insights. But the basic properties of the valence electronic states—whether they are extended as in periodic crystals or localized as in amorphous materials—are still largely unresolved3. Here we investigate the electronic bandstructure of quasicrystals through angle-resolved photoemission experiments on decagonal Al71.8Ni14.8Co13.4. We find that the s-p and d states exhibit band-like behaviour with the symmetry of the quasiperiodic lattice, and that the Fermi level is crossed by dispersing d-bands. The observation of free-electron-like bands, distributed in momentum space according to the surface diffraction pattern, suggests that the electronic states are not dominated by localization.