Optical Response of fci-ZnMgHo Quasicrystal
V. Karpus a, G.-J. Babonas a, A. Rėza a, A. Suchodolskis a, S. Tumėnas a, O. Hunderi b, W. Assmus c and S. Brűhne c
a Semiconductor Physics Institute, A. Goštauto 11, 01108 Vilnius, Lithuania
b NTNU, Ho gskoleringen 5, 7491 Trondheim, Norway
c J.W. Goethe-Universität, Max-von-Laue-Str. 1, 60438 Frankfurt am Main, Germany
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Received: 26 08 2007;
The results of an optical spectroscopy study of the icosahedral fci-ZnMgHo quasicrystal are presented. The dielectric function of the quasicrystal was measured by the spectroscopic ellipsometry technique in the spectral range of 0.1-5.0 eV. The analysis of the dielectric function shows that an optical response of fci-ZnMgHo is a superposition of the free-electron Drude-type contribution and that of the interband transitions across the fci-ZnMgHo pseudogap.
DOI: 10.12693/APhysPolA.113.1005
PACS numbers: 71.23.Ft