Electronic transport through an open elliptic cavity  

作　　者：王哲献 明燚 丁泽军 

机构地区：[1]Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics,University of Science and Technology of China,Hefei230026,China [2]Department of Physics,Anhui University,Hefei230039,China

出　　处：《Chinese Physics B》2007年第11期3507-3513,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China （Grant Nos 10574121, 90406024 and 10025420）, Chinese Education Ministry and Chinese Academy of Sciences.

摘　　要：This paper computes the conductance of an open ellipse cavity and discusses the effect of finite leads on conductance. The lead introduces mode coupling with bound states in the cavity which contributes to Fano resonant line shapes in conductance. By examining the resonant states in the cavity, the effects of state mixing and annular probability distribution of wave function due to the presence of leads are found. The results have been compared with the transport properties of other systems. The finite leads result in two effects, i.e. the evanescent mode contribution and additional oscillations, to the conductance.This paper computes the conductance of an open ellipse cavity and discusses the effect of finite leads on conductance. The lead introduces mode coupling with bound states in the cavity which contributes to Fano resonant line shapes in conductance. By examining the resonant states in the cavity, the effects of state mixing and annular probability distribution of wave function due to the presence of leads are found. The results have been compared with the transport properties of other systems. The finite leads result in two effects, i.e. the evanescent mode contribution and additional oscillations, to the conductance.

关 键 词：open elliptic cavity mode coupling finite leads TRANSPORT 

分 类 号：O44[理学—电磁学]