Magnetoelectric Coupling Induced Electric Dipole Glass State in Heisenberg Spin Glass  

作　　者：刘俊明 陈王丽华 蔡忠龙 

机构地区：[1]Department of Applied Physics, Hong Kong Polytechnic University, Hong Kong [2]Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093 [3]International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110015

出　　处：《Chinese Physics Letters》2009年第8期323-326,共4页中国物理快报（英文版）

基　　金：Supported by the Hong Kong Polytechnic University （1-BB84）, and the National Natural Science Foundation of China under Grant Nos 50832002 and 10674061, the National Basic Research Program of China under Grant No 2009CB925101 and 2006CB921802, and the 111 Project of the MOE of China.

摘　　要：Multiferroic behavior in an isotropic Heisenberg spin glass with Gaussian random fields, incorporated by magneto-electric coupling derived from the Landau symmetry argument, are investigated. Electric dipole glass transitions at finite temperature, due to coupling, are demonstrated by Monte Carlo simulation. This electric dipole glass state is solely ascribed to the coupling term with chiral symmetry of the magnetization, while the term associated with the spatial derivative of the squared magnetization has no contribution.Multiferroic behavior in an isotropic Heisenberg spin glass with Gaussian random fields, incorporated by magneto-electric coupling derived from the Landau symmetry argument, are investigated. Electric dipole glass transitions at finite temperature, due to coupling, are demonstrated by Monte Carlo simulation. This electric dipole glass state is solely ascribed to the coupling term with chiral symmetry of the magnetization, while the term associated with the spatial derivative of the squared magnetization has no contribution.

关 键 词：sea surface nonliear interaction numerical method 

分 类 号：O482.54[一般工业技术—材料科学与工程] O441[理学—固体物理]