Topological Vortices in a Spin-Triplet Superconductor  

作　　者：REN Ji-Rong WEI Shao-Wen XU Dong-Hui DUAN Yi-Shi 

机构地区：[1]Institute of Theoretical Physics, Lanzhou University, Lanzhou 730000, China

出　　处：《Communications in Theoretical Physics》2008年第8期525-528,共4页理论物理通讯（英文版）

基　　金：supported by National Natural Science Foundation of China and Cuiying Programme of Lanzhou University

摘　　要：Based on the complex three-component order parameter model of a spin-triplet superconductor, by using the C-mapping theory, we derive a new equation describing the distribution of the magnetic field for vortices, which can be reduced to the modified London equation in the case of ｜ψ^2｜^2 ^- ｜ψ^3｜^2 = 0 and Wl^1= 1. A magnetic flux quantization condition for vortices in a spin-triplet superconductor is also derived, which is topological-invariant. Fhrthermore, the branch processes during the evolution of the vortices in a spin-triplet superconductor are discussed. We also point out that the sum of the magnetic flux quantization that those vortices carried is 2nФo （Фo is the unit magnetic flux）, that is to say, the sum of winding number is even, which needs to be proved by experiment.

关 键 词：spin-triplet superconductor topological defects bifurcation point 

分 类 号：O41[理学—理论物理]