中国物理B ›› 2013, Vol. 22 ›› Issue (8): 87410-087410.doi: 10.1088/1674-1056/22/8/087410

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

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

Crystal chemistry and structural design of iron-based superconductors

蒋好, 孙云蕾, 许祝安, 曹光旱   

  1. Department of Physics, Zhejiang University, Hangzhou 310027, China
  • 收稿日期:2013-06-18 出版日期:2013-06-27 发布日期:2013-06-27
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 90922002 and 11190023) and the Fundamental Research Funds for the Central Universities of Ministry of Education of China (Grant No. 2013FZA3003)

Crystal chemistry and structural design of iron-based superconductors

Jiang Hao (蒋好), Sun Yun-Lei (孙云蕾), Xu Zhu-An (许祝安), Cao Guang-Han (曹光旱)   

  1. Department of Physics, Zhejiang University, Hangzhou 310027, China
  • Received:2013-06-18 Online:2013-06-27 Published:2013-06-27
  • Contact: Cao Guang-Han E-mail:ghcao@zju.edi.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 90922002 and 11190023) and the Fundamental Research Funds for the Central Universities of Ministry of Education of China (Grant No. 2013FZA3003)

摘要: The second class of high-temperature superconductors (HTSCs), iron-based pnictides and chalcogenides, necessarily contain Fe2X2 ("X" refers to a pnictogen or a chalcogen element) layers, just like the first class of HTSCs which possess the essential CuO2 sheets. So far, dozens of iron-based HTSCs, classified into nine groups, have been discovered. In this article, the crystal-chemistry aspects of the known iron-based superconductors are reviewed and summarized by employing "hard and soft acids and bases (HSAB)" concept. Based on these understandings, we propose an alternative route to exploring new iron-based superconductors via rational structural design.

关键词: iron-based superconductors, crystal chemistry, structural design

Abstract: The second class of high-temperature superconductors (HTSCs), iron-based pnictides and chalcogenides, necessarily contain Fe2X2 ("X" refers to a pnictogen or a chalcogen element) layers, just like the first class of HTSCs which possess the essential CuO2 sheets. So far, dozens of iron-based HTSCs, classified into nine groups, have been discovered. In this article, the crystal-chemistry aspects of the known iron-based superconductors are reviewed and summarized by employing "hard and soft acids and bases (HSAB)" concept. Based on these understandings, we propose an alternative route to exploring new iron-based superconductors via rational structural design.

Key words: iron-based superconductors, crystal chemistry, structural design

中图分类号:  (Pnictides and chalcogenides)

  • 74.70.Xa
74.10.+v (Occurrence, potential candidates) 74.62.Bf (Effects of material synthesis, crystal structure, and chemical composition) 74.62.Dh (Effects of crystal defects, doping and substitution)