长直量子线中δ势散射的共振态  

RESONANT STATES IN A STRAIGHT LONG QUANTUM WIRE WITH A SINGLE δ-FUNCTION SCATTERER

作　　者：郭子政[1] 吴晓薇[2] 娜仁其木格[1] 

机构地区：[1]内蒙古师范大学物理系,内蒙古呼和浩特010022 [2]内蒙古农业大学基础部,内蒙古呼和浩特010018

出　　处：《内蒙古师范大学学报（自然科学汉文版）》2002年第1期31-34,共4页Journal of Inner Mongolia Normal University(Natural Science Edition)

基　　金：内蒙古自然科学基金资助项目 (980 2 0 1)

摘　　要：利用格林函数方法讨论了量子系统中共振能量与束缚能级的关系 ,指出它们应满足的不同条件 .采用简化方法讨论了长直量子线中δ势散射的共振态 ,发现与一维情况相同 ,准一维量子线中的δ势散射不存在共振透射 .The differences between the resonant energies and the bound state energies of the quantum system are discussed using the Green's function method,and the results show that the two kinds of energies are required to meet different conditions.The resonance phenomena of the quantum system are analyzed with a simplized method,in which it is no need to calculate the conductance,so that it is more convenient and needs less computation.The resonant states in a straight long quantum wire with a single δ-function scatterer are studied and we have found that there is no resonant transmission in this system just as in the case of a pure one-dimensional system.

关 键 词：长直量子线 δ势散射 共振态 束缚态 格林函数 

分 类 号：O413.1[理学—理论物理]