Abstract
The electronic structure and electron transport properties of thermally stable AlCuRu quasicrystals were studied through measurements of the low-temperature specific heat, the XPS valence band spectra and the temperature dependences of the electrical resistivity and the Hall coefficient. A combination of the measured XPS valence band spectra and the electronic specific heat coefficients led us to conclude that Ru 4d states dominate below the Fermi level and that a deep pseudogap exists at the Fermi level. This unique electronic structure is responsible for the manifestation of electron transport properties characteristic of weak localization in the present quasicrystals.
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