A One-Dimensional Long Range Model with a Highly Asymmetric Band Structure and Its Transport Properties
Based on the tight-binding model of long range hopping,we design a one-dimensional lattice model with a highly asymmetric band structure and investigate its transport properties.We found that when the lead is completely consistent with the sample in the central sample,there is a phenomenon of multi-channel transport.As the hopping range increases,the maximum number of channels also increases.After re ducing the quantum lifetime through dephasing dissipation,there is a significant difference between forward and backward transports.When the lead and the central sample material are not consistent,resonant tunnel ing effect occurs.These phenomena provide us with new possibilities for studying one-dimensional devices with directional transports.
NETL
NSTL
万方数据
