,Quantum diffusion in semi-infinite periodic and quasiperiodic systems

来源 :中国物理B(英文版) | 被引量 : 0次 | 上传用户:lmx1983
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
This paper studies quantum diffusion in semi-infinite one-dimensional periodic lattice and quasiperiodic Fibonacci lattice. It finds that the quantum diffusion in the semi-infinite periodic lattice shows the same properties as that for the infinite periodic lattice. Different behaviour is found for the semi-infinite Fibonacei lattice. In this ease, there are still C(t)~t-δ and d(t) ~tβ. However, it finds that 0 < δ< 1 for smaller time, and δ=0 for larger time due to the influence of surface localized states. Moreover, β for the semi-infinite Fibonacci lattice is much smaller than that for the infinite Fibonacci lattice. Effects of disorder on the quantum diffusion are also diaeussed.
其他文献
This paper reports that hexagonal-phase LaF3:Yb3+0.20,Er3+0.02 and LaF3:Yb3+0.20,Tm3+0.02 nanocrystals(NCs)were synthesized via a hydrothermal method.The transm
Nano-sheet carbon films are prepared on Si wafers by means of quartz-tube microwave plasma chemical vapour deposition (MPCVD) in a gas mixture of hydrogen and m
It is shown that a Gaussian light beam transmitting through a planar thin dielectric slab in the air undergoes four different effects,i.e.lateral Gons-H(a)nchen
Using first-principles techniques, we investigate the (001) surfaces of cubic PbHfO3 (PHO) and BaHfO3 (BHO) terminated with both AO (A=Pb and Ba) and HfO2- Surf
3-hydroxyflavone (3-HF) is an organic molecule with an excited-stated intramoleculax proton transfer (ESIPT)effect. All-optical switchings and beam deflections
Based on the analysis and the discussion of the influence of thermal ionization energy and various scatterings on magnetoresistance(MR) of p-type diamond films,
介绍了一种新型的光纤温度传感器,将它埋入复合材料试件中,可以测量出试件内部的温度变化.给出了理论推导,导出了条纹移动量与试件内部温度变化之间的关系.给出了实验装置和结果.