Low Temperature Electronic Transport in Al–Cu–Ru Quasicrystalline Alloys
Journal of Low Temperature Physics(2007)
摘要
Electrical resistivities of several quasicrystalline (QC) icosahedral Al–Cu–Ru alloys have been measured between room temperature and mK temperatures. None of the Al–Cu–Ru samples exhibited “insulating” behaviors in their resistivities. One sample had a large resistivity of ≈49,000 μΩ cm at room temperature. Its resistivity increased with decreasing temperatures by a factor of 3.2 and exhibited a maximum around 2 K. Fitting discrepancies between the experimental magnetoconductivity data and the weak localization and electron–electron interaction theories suggest that the weak localization theory poorly describes the electronic conduction behavior of this highly resistive quasicrystalline sample.
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关键词
Al–Cu–Ru phases,Quasicrystals,Electrical conductivity,Magnetoconductivity
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