Electronic transport measurements are summarised on two insulating icosahedral quasicrystalline (IQC) Al69.0 Pd22.8 Re8.2 samples. Data were taken between 0.020 K ≤ T ≤ 292 K and in magnetic fields Bs up to 18 T. For a weakly insulating IQC, the electronic conductivity followed the expression σ(T) = σ0Tzexp(T/ T0) over four decades of temperature. For a strongly insulating sample, the conductivity above 0.3 K followed simple temperature power laws, σ (T) = σ0 Tz. Below 0.2 K, the conductivity displayed an activated variable-range hopping (VRH) law. These fits included a conductivity contribution arising from the presence of a second metallic phase, which caused “weak saturation” of the measured resistances below 1 K.
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Rosenbaum, R.L., Grushko, B. & Przepiórzyński, B. Electronic Transport Behaviors of Insulating Icosahedral Al–Pd–Re Bulk Samples. J Low Temp Phys 142, 101–113 (2006). https://doi.org/10.1007/s10909-005-9414-7
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DOI: https://doi.org/10.1007/s10909-005-9414-7