%0 Journal Article
%T Electromagnetic modes in a three-layered structure made of single-negative materials<br>三层单负材料结构中电磁波模分析
%A Song Ge
%A Xu Jing-Ping
%A Yang Ya-Ping
%A <br>宋戈
%A 许静平
%A 羊亚平
%J 物理学报
%D 2011
%I 
%X The modes in a three-layered structure made of single-negative materials have been investigated. For the propagation mode, the tunneling mode can be formed in the structure. When tunneling mode appears the variations of electric field distribution and the transmission with incident angle are studied. We find that there appear two new localized modes when the thickness of the middle layer changes. The frequency interval of the two localized modes can be increased by decreasing the thickness of the middle layer. For the guided mode, the electromagnetic wave is evanescent in semi-infinite vacuum which is on the both sides of the structure. We have analyzed the existence condition of its electromagnetic mode,that is, the dispersion relation. The result shows that a strong local field appears in the interface of the material.
%K single-negative materials
%K resonant tunneling
%K propagation mode
%K guided mode<br>单负材料
%K 共振隧穿
%K 传播模
%K 波导模
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=27C14E609A3E452C38D22C77C2C7D367&yid=9377ED8094509821&vid=BFE7933E5EEA150D&iid=DF92D298D3FF1E6E&sid=10B0E05CF76DC299&eid=10B0E05CF76DC299&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=14