第二类广义Fibonacci链中电子的量子动力学研究

The Electronic Dynamical Behavior in 1D Second Generalized Fibonacci Chain

研究了第二类广义Fibonacci非周期链中电子的量子动力学行为 .通过数值计算 ,发现电子本征态中存在扩展态时 ,其量子扩散的波尾形状不满足波尾公式 ,当系统中电子的本征态仅有局域态或临界态时 ,波尾形状才与公式吻合 ,从而证实了波包在量子体系中扩散时波尾形状的非普适性 .

The electronic quantum dynamic behavior in the 1D second generalized Fibonacci chain was studied.If there is expanded state in the electronic eigenstates, the shape of the quantum diffusion tail will no longer accord with the universal tail formula. Only when there is localized state or critical state in the system the tail shape can be determined by the formula. So we prove that the tail formula of the wavepacket is not universal.