Spin-Flip Process of Polarons in Conjugated Polymers with Magnetic Impurities  

作　　者：赵晖 张旭明 安忠 陈宇光 吴长勤 

机构地区：[1]Department of Physics, Tongji University, Shanghai 200092 [2]Department of Physics and Surface Physics Laboratory, Fudan University, Shanghai 200433 [3]National Laboratory for the Infrared Physics, Shanghai Institute of Technology Physics, Chinese Academy of Sciences, Shanghai 200083 [4]College of Physics, Hebei Normal University, Shijiazhuang 050016

出　　处：《Chinese Physics Letters》2009年第8期301-304,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China, the MSTC of China under Grant No 2006CB921302, the EC Project OFSPIN （NMP3-CT-2006-033370）, the Program for New Century Excellent Talents in University （NCET）, and Hebei Province Outstanding Youth Science Fund （A2009001512）.

摘　　要：Being driven by an external electric field a polaron carrying both spin 1/2 and charge ±e moves at a constant speed in a polymer chain. When the polaron passes through a specific site, which couples to a magnetic impurity via spin-exchange interactions, its spin undergoes a spin-flip process if it is antiparallel to the impurity spin. Our numerical simulation shows that （a） a swap-like operation is performed between the polaron and impurity during the scattering process （b） polarons might be good candidates to be information carriers in the molecular scale.Being driven by an external electric field a polaron carrying both spin 1/2 and charge ±e moves at a constant speed in a polymer chain. When the polaron passes through a specific site, which couples to a magnetic impurity via spin-exchange interactions, its spin undergoes a spin-flip process if it is antiparallel to the impurity spin. Our numerical simulation shows that （a） a swap-like operation is performed between the polaron and impurity during the scattering process （b） polarons might be good candidates to be information carriers in the molecular scale.

分 类 号：O441.1[理学—电磁学] O471.3[理学—物理]