Document Details

Document Type : Article In Journal 
Document Title :
CaFeAs2: A staggered intercalation of quantum spin Hall and high-temperature superconductivity
CaFeAs2: A staggered intercalation of quantum spin Hall and high-temperature superconductivity
 
Subject : physics 
Document Language : English 
Abstract : We predict that CaFeAs2, a newly discovered iron-based high-temperature (T-c) superconductor, is a staggered intercalation compound that integrates topological quantum spin Hall (QSH) and superconductivity (SC). CaFeAs2 has a structure with staggered CaAs and FeAs layers. While the FeAs layers are known to be responsible for high T-c superconductivity, we show that with spin orbital coupling each CaAs layer is a Z(2) topologically nontrivial two-dimensional QSH insulator and the bulk is a three-dimensional weak topological insulator. In the superconducting state, the edge states in the CaAs layer are natural one-dimensional topological superconductors. The staggered intercalation of QSH and SC provides us a unique opportunity to realize and explore physics, such as Majorana modes and Majorana fermion chains 
ISSN : 1098-0121 
Journal Name : PHYSICAL REVIEW B 
Volume : 91 
Issue Number : 8 
Publishing Year : 1435 AH
2015 AD 
Article Type : Article 
Added Date : Monday, August 21, 2017 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
X WuWu, X InvestigatorDoctorate 
S.S QinQin, S.S ResearcherDoctorate 
Y LiangLiang, Y ResearcherDoctorate 
H FangFang, H ResearcherDoctorate 
J.P Hu,Hu, J.P Researcher jphu@iphy.ac.cn

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