中国物理B ›› 2013, Vol. 22 ›› Issue (8): 87401-087401.doi: 10.1088/1674-1056/22/8/087401

所属专题: TOPICAL REVIEW — Iron-based high temperature superconductors

• TOPICAL REVIEW—Iron-based high temperature superconductors • 上一篇    下一篇

Exploration of iron-chalcogenide superconductors

董持衡a, 王杭栋a b, 方明虎a   

  1. a Department of Physics, Zhejiang University, Hangzhou 310027, China;
    b Department of Physics, Hangzhou Normal University, Hangzhou 310016, China
  • 收稿日期:2013-05-06 修回日期:2013-07-09 出版日期:2013-06-27 发布日期:2013-06-27
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant Nos. 2011CBA00103, 2012CB821404, and 2009CB929104), the National Natural Science Foundation of China (Grant Nos. 10974175, 10934005, and 11204059), the Natural Science Foundation of Zhejiang Province, China (Grant No. Q12A040038), and the Fundamental Research Funds for the Central Universities of China.

Exploration of iron-chalcogenide superconductors

Dong Chi-Heng (董持衡)a, Wang Hang-Dong (王杭栋)a b, Fang Ming-Hu (方明虎)a   

  1. a Department of Physics, Zhejiang University, Hangzhou 310027, China;
    b Department of Physics, Hangzhou Normal University, Hangzhou 310016, China
  • Received:2013-05-06 Revised:2013-07-09 Online:2013-06-27 Published:2013-06-27
  • Contact: Fang Ming-Hu E-mail:mhfang@zju.edu.cn
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant Nos. 2011CBA00103, 2012CB821404, and 2009CB929104), the National Natural Science Foundation of China (Grant Nos. 10974175, 10934005, and 11204059), the Natural Science Foundation of Zhejiang Province, China (Grant No. Q12A040038), and the Fundamental Research Funds for the Central Universities of China.

摘要: Iron-chalcogenide compounds with FeSe(Te, S) layers did not attract much attention until the discovery of high-Tc superconductivity (SC) in the iron-pnictide compounds at the begining of 2008. Compared with FeAs-based superconductors, iron-chalcogenide superconductors have aroused enormous enthusiasm to study the relationship between SC and magnetisms with several distinct features, such as different antiferromagnetic ground states with relatively large moments in the parents, indicating possibly different superconducting mechanisms, the existence of the excess Fe atoms or Fe vacancies in the crystal lattice. Another reason is that the large single crystals are easily grown for the iron-chalcogenide compounds. This review will focus on our exploration for the iron-chalcogenide superconductors and discussion on several issues, including the crystal structure, magnetic properties, superconductivity, and phase separation. Some of them reach a consensus but some important questions still remain to be answered.

关键词: Fe-based superconductors, Fe(Te,Se,S) compounds, (Tl,K,Rb)FexSe2 compounds

Abstract: Iron-chalcogenide compounds with FeSe(Te, S) layers did not attract much attention until the discovery of high-Tc superconductivity (SC) in the iron-pnictide compounds at the begining of 2008. Compared with FeAs-based superconductors, iron-chalcogenide superconductors have aroused enormous enthusiasm to study the relationship between SC and magnetisms with several distinct features, such as different antiferromagnetic ground states with relatively large moments in the parents, indicating possibly different superconducting mechanisms, the existence of the excess Fe atoms or Fe vacancies in the crystal lattice. Another reason is that the large single crystals are easily grown for the iron-chalcogenide compounds. This review will focus on our exploration for the iron-chalcogenide superconductors and discussion on several issues, including the crystal structure, magnetic properties, superconductivity, and phase separation. Some of them reach a consensus but some important questions still remain to be answered.

Key words: Fe-based superconductors, Fe(Te,Se,S) compounds, (Tl,K,Rb)FexSe2 compounds

中图分类号:  (Occurrence, potential candidates)

  • 74.10.+v
74.25.-q (Properties of superconductors) 74.25.Dw (Superconductivity phase diagrams) 74.72.Cj (Insulating parent compounds)