文献类型：期刊文献

英文题名：Fidelity in topological superconductors with end Majorana fermions

作者：Wang, Zhi[1];Liang, Qi-Feng[2,3];Yao, Dao-Xin[1]

机构：[1]Sun Yat Sen Univ, Sch Phys & Engn, Guangzhou 510275, Guangdong, Peoples R China;[2]Shaoxing Univ, Dept Phys, Shaoxing 312000, Peoples R China;[3]Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton WPI MANA, Tsukuba, Ibaraki 3050044, Japan

年份：2013

卷号：377

期号：38

起止页码：2653

外文期刊名：PHYSICS LETTERS A

收录：SCI-EXPANDED(收录号：WOS:000325190200038)、、EI(收录号：20202208733521)、Scopus(收录号：2-s2.0-84883760019)、WOS

基金：This work was supported by Fundamental Research Funds for the Central Universities of China under Grant No. 30000-1188131. Q-F.L. is supported by NSFC-10904092. D.X.Y. is supported by the National Basic Research Program of China (2012CB821400), NSFC-11074310, NSFC-11275279, Specialized Research Fund for the Doctoral Program of Higher Education (20110171110026), Fundamental Research Funds for the Central Universities of China, and NCET-11-0547.

语种：英文

外文关键词：Majorana fermion; Fidelity

外文摘要：Fidelity and fidelity susceptibility are introduced to investigate the topological superconductors with end Majorana fermions. A general formalism is established to calculate the fidelity and fidelity susceptibility by solving Bogoliubov-de Gennes equations. Both clean and disordered systems are studied within this formalism, and the results show that the fidelity susceptibility serves as a valid indicator for the topological quantum phase transition which signals the appearance of Majorana fermions. Our study provides a useful tool to investigate the topological quantum phase transition in superconductors, which is helpful to find topological phases in various systems. (C) 2013 Elsevier B.V. All rights