Institute of Physics, M Curie-Skłodowska University, Lublin, Poland.
J Phys Condens Matter. 2010 Jul 28;22(29):295303. doi: 10.1088/0953-8984/22/29/295303. Epub 2010 Jun 29.
Electron transport through a quantum wire (or coupled quantum dots) with time-dependent couplings between the nearest-neighbor and next-neighbor sites is studied by means of the evolution operator method and tight-binding Hamiltonian. Two geometries of a wire (linear and zigzag shaped) are considered in our calculations. Charge waves inside the wire and the conductance oscillation effect, i.e. the conductance as a function of the wire length, are analyzed. For a zigzag shaped wire with time-dependent couplings the conductance is characterized by a Fano-like resonance with many sideband peaks.
通过演化算符方法和紧束缚哈密顿量研究了具有最近邻和次近邻位点之间时变耦合的量子线（或耦合量子点）中的电子输运。在我们的计算中，考虑了两种线的几何形状（线性和锯齿形）。分析了线内的电荷波和电导振荡效应，即电导作为线长的函数。对于具有时变耦合的锯齿形线，电导的特点是具有许多旁瓣峰的类 Fano 共振。
