Low-Temperature Conduction Mechanism Near the Metal-Insulator Transition of Al_<70>Pd_<22.5>Re_<7.5> Quasicrystals : Condensed Matter: Electronic Properties, etc.

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概要

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• We have found that near the metal-insulator transition of Al_<70>Pd_<22.5>Re_<7.5> quasicrystal, the conductivity σ(T) obeys σ(T) = σ(0) + mT^<1/3> between 1.5 K and 〜10 K on both sides of the metal-insulator transition, as found in disorder systems. This indicates that the conductivity near the metal-insulator transition of the Al-Pd-Re quasicrystals is mainly controlled by electron-electron interactions. The quantum interference theory is found to be able to interpret the conductivity of the samples in the scaling region up to 30 K. The inelastic scattering which causes the phase breaking at low temperature is chiefly due to the electron-electron scattering with the relaxation time T_<ie> 〜 10^<-11>T^<-α> sec (α 〜1.0).

• 2000-10-15

著者

• LIN Shui-Tien

  Department of Physics,National Cheng Kung University

• Wang Chang-ren

  Department Of Physics National Cheng Kung University

• Lln Shui-tien

  Department Of Physics National Cheng Kung University

• SU Tzung-I

  Department of Physics, National Cheng Kung University

関連論文

• Low-Temperature Conductivity of Al_Pd_Re_ Quasicrystals
• Low-Temperature Conduction Mechanism Near the Metal-Insulator Transition of Al_Pd_Re_ Quasicrystals : Condensed Matter: Electronic Properties, etc.

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