Matching Boundary Conditions for a Heterogeneous Atomic Chain  

作　　者：陈星如 刘舒瑜 唐少强 

机构地区：[1]HEDPS,CAPT and LTCS,Department of Mechanics and Engineering Science,College of Engineering,Peking University

出　　处：《Chinese Physics Letters》2016年第8期1-4,共4页中国物理快报（英文版）

基　　金：Supported by the Chun-Tsung Fund;the National Natural Science Foundation of China under Grant Nos 11272009 and 11521202

摘　　要：We propose accurate boundary treatments for a heterogeneous atomic chain, in terms of matching boundary conditions （MBCs）. The main challenge lies in reproducing the physical reflection across the boundary to a correct amount. With reflection coefficients we demonstrate that the accuracy is improved when more atoms are used under the boundary condition. The inclusion of an atom in the embedded sublattice B may considerably enhance the performance. Numerical testing illustrates the effectiveness of the proposed MBCs.We propose accurate boundary treatments for a heterogeneous atomic chain, in terms of matching boundary conditions （MBCs）. The main challenge lies in reproducing the physical reflection across the boundary to a correct amount. With reflection coefficients we demonstrate that the accuracy is improved when more atoms are used under the boundary condition. The inclusion of an atom in the embedded sublattice B may considerably enhance the performance. Numerical testing illustrates the effectiveness of the proposed MBCs.

关 键 词：for on it Matching Boundary Conditions for a Heterogeneous Atomic Chain of is MBC that 

分 类 号：O562[理学—原子与分子物理]