The topological structure of the integral quantum Hall effect in magnetic semiconductor-superconductor hybrids  

作　　者：任继荣 朱辉 

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

出　　处：《Chinese Physics B》2009年第6期2535-2541,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No 10275030)

摘　　要：An unconventional integer quantum Hall regime was found in magnetic semiconductor-superconductor hybrids. By making use of the decomposition of the gauge potential on a U（1） principal fibre bundle over k-space, we study the topological structure of the integral Hall conductance. It is labeled by the Hopf index β and the Brouwer degree η. The Hall conductance topological current and its evolution is discussed.An unconventional integer quantum Hall regime was found in magnetic semiconductor-superconductor hybrids. By making use of the decomposition of the gauge potential on a U（1） principal fibre bundle over k-space, we study the topological structure of the integral Hall conductance. It is labeled by the Hopf index β and the Brouwer degree η. The Hall conductance topological current and its evolution is discussed.

关 键 词：integral quantum Hall effect gauge potential Hopf index VORTEX 

分 类 号：O469[理学—凝聚态物理]