一维费米原子系统中的拓扑超流和Majorana费米子  

Topological superfluid and Majorana fermions in one-dimensional fermionic atomic systems

作　　者：高先龙[1] 陈捷[1] 陈阿海[1] 

机构地区：[1]浙江师范大学数理与信息工程学院,浙江金华321004

出　　处：《浙江师范大学学报（自然科学版）》2013年第4期372-378,共7页Journal of Zhejiang Normal University:Natural Sciences

基　　金：国家自然科学基金资助项目(11174253)

摘　　要：通过数值求解Bogoliubov de Gennes方程,研究了具有自旋轨道耦合作用的一维费米晶格系统的性质.结果表明:在有限的自旋轨道耦合下和一定的磁场强度时,系统具有零能,此时的准粒子即为Majorana费米子.准无序效应研究表明,Majorana费米子不会被弱准无序所破坏.It was studied the properties of one-dimensional fermionic atomic systems of spin-orbital couplings by means of numerically solving the Bogoliubov de Gennes equations. It was showed that, under the finite spin-orbital coupling strength and strong enough magnetic field, the system would be of zero energy, which be-haved as the Majorana fermions. The effects of the quasi-disorder on the Majorana wave functions were also studied, which had little influence on the localization of the Majorana fermions.

关 键 词：拓扑超流 光晶格 Majorana费米子 零能 准无序 

分 类 号：O562.4[理学—原子与分子物理]