TY - JOUR
T1 - Are decagonal quasicrystals the Hume-Rothery phases?
AU - Stadnik, Z. M.
AU - Zhang, G. W.
AU - Tsai, A. P.
AU - Inoue, A.
N1 - Funding Information:
This work was supported by the Natural Sciences and Engineering Research Council of Canada and by the Ministry of Education, Science, and Culture of Japan. The research was carried out (in part) at the National Synchrotron Light Source, Brookhaven National Laboratory, which is supported by the U.S. Department of Energy, Division of Materials Sciences and Division of Chemical Sciences (DOE contract No. DE-AC02-76-CH00016). Two of us (Z.M.S. and G.W.Z.) are indebted to Dr. M.-L. Shek for her help in performing the PES experiments.
PY - 1995/2/27
Y1 - 1995/2/27
N2 - Photoemission spectroscopy measurements in the photon energy range 40-100 eV have been used to make the first determinations of the valence bands of the high quality decagonal alloys Al65Co15Cu20 and Al70Co15Ni15. Within the energy resolution our results reveal that, contrary to the prediction of recent band-structure calculations and to the widespread qualitative interpretation of various electronic transport data, there is no pseudogap in the density of states at the Fermi level. This suggests that decagonal alloys differ significantly in their electronic structure from icosahedral alloys and that a Hume-Rothery mechanism does not play an important role in accounting for their stability and electronic transport properties.
AB - Photoemission spectroscopy measurements in the photon energy range 40-100 eV have been used to make the first determinations of the valence bands of the high quality decagonal alloys Al65Co15Cu20 and Al70Co15Ni15. Within the energy resolution our results reveal that, contrary to the prediction of recent band-structure calculations and to the widespread qualitative interpretation of various electronic transport data, there is no pseudogap in the density of states at the Fermi level. This suggests that decagonal alloys differ significantly in their electronic structure from icosahedral alloys and that a Hume-Rothery mechanism does not play an important role in accounting for their stability and electronic transport properties.
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U2 - 10.1016/0375-9601(95)00046-6
DO - 10.1016/0375-9601(95)00046-6
M3 - Article
AN - SCOPUS:33749528232
VL - 198
SP - 237
EP - 242
JO - Physics Letters, Section A: General, Atomic and Solid State Physics
JF - Physics Letters, Section A: General, Atomic and Solid State Physics
SN - 0375-9601
IS - 3
ER -