A new practical equation is derived from the Miller-Abrahams theory for different site-energies,and the temperaturedependent conductivity of Fibonacci lattice is calculated by a real-space renormalization-group approa...A new practical equation is derived from the Miller-Abrahams theory for different site-energies,and the temperaturedependent conductivity of Fibonacci lattice is calculated by a real-space renormalization-group approach.It is shown that there exist two types of temperature-dependent conductivity at low-and high-frequencies.Furthermore,it is found that the low-frequency conductivity oscillates dramatically with temperature.展开更多
基金Supported by the National Natural Science Foundation of China under Grant No.59871044the Hu'nan Provincial Natural Science Foundation of China under Grant No.96WLX001010.
文摘A new practical equation is derived from the Miller-Abrahams theory for different site-energies,and the temperaturedependent conductivity of Fibonacci lattice is calculated by a real-space renormalization-group approach.It is shown that there exist two types of temperature-dependent conductivity at low-and high-frequencies.Furthermore,it is found that the low-frequency conductivity oscillates dramatically with temperature.
