Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10727857 | Physics Letters A | 2013 | 6 Pages |
Abstract
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.
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Physical Sciences and Engineering
Physics and Astronomy
Physics and Astronomy (General)
Authors
Zhi Wang, Qi-Feng Liang, Dao-Xin Yao,