Transition pathways in Cylinder-Gyroid interface  

作　　者：Xiaomei Yao Jie Xu Lei Zhang 

机构地区：[1]Beijing International Center for Mathematical Research,Peking University,Beijing 100871,China [2]LSEC&NCMIS,Institute of Computational Mathematics and Scientific/Engineering Computing(ICMSEC),Academy of Mathematics and Systems Science(AMSS),Chinese Academy of Sciences,Beijing,China

出　　处：《Communications in Computational Physics》2022年第8期810-828,共19页计算物理通讯（英文）

基　　金：supported by the National Natural Science Foundation of China No.12001524 and and No.12288201;supported by the National Natural Science Foundation of China No.12050002 and the National Key R&D Program of China 2021YFF1200500.

摘　　要：When two distinct ordered phases contact,the interface may exhibit rich and fascinating structures.Focusing on the Cylinder-Gyroid interface system,transition pathways connecting various interface morphologies are studied armed with the Landau–Brazovskii model.Specifically,minimum energy paths are obtained by computing transition states with the saddle dynamics.We present four primary transition pathways connecting different local minima,representing four different mechanisms of the formation of the Cylinder-Gyroid interface.The connection of Cylinder and Gyroid can be either direct or indirect via Fddd with three different orientations.Under different displacements,each of the four pathways may have the lowest energy.

关 键 词：Landau-Brazovskii model Cylinder-Gyroid interface saddle dynamics transition state transition pathway 

分 类 号：O41[理学—理论物理]