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Crystal structure and phase diagrams of iron-based superconductors

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Abstract

Since the discovery of high-temperature superconductivity (HTS) in iron-based compounds, a variety of systems with different spacer layers have been fabricated. Concurrently, considerable experimental and theoretical effort has been expended exploring the characteristics and source of HTS in iron-based superconductors. However, the origin of this HTS remains unresolved to date, while considerable debate exists regarding the underlying physics of the normal-state properties of iron-based compounds in particular. In this short review, we will briefly summarize the crystal structures and phase diagrams of the iron-based superconducting systems, aiming to discover potential avenues for the development of new superconductors with higher superconducting transition temperatures (T c), along with indications of the specifics of the HTS mechanism in these substances.

中文摘要

自铁基化合物中发现高温超导电性以来, 人们已经合成了众多具有不同间隔层的体系. 同时科学家们在揭示铁基超导体高温超导电性的长征中投入了大量的实验和理论上的努力. 但是直到今天其高温超导电性的起源仍然没有得以解决, 特别是对正常态性质背后的物理还存在很多争论. 本综述总结了铁基超导体系的晶体结构以及相图, 并提供了一些指向具有更高转变温度T c的新超导体的提示和高温超导机理的线索.

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  1. Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei, 230026, China

    Xigang Luo & Xianhui Chen

  2. Key Laboratory of Strongly-coupled Quantum Matter Physics, Chinese Academy of Sciences, University of Science and Technology of China, Hefei, 230026, China

    Xigang Luo & Xianhui Chen

Authors
  1. Xigang Luo
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  2. Xianhui Chen
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Correspondence to Xianhui Chen.

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Xigang Luo is an associate Professor in Physics at the University of Science and Technology of China (USTC). He received his PhD degree from USTC in 2005. His research is focused on the study of the physics of novel functional materials, such as unconventional superconductors, thermoelectric oxides.

Xianhui Chen obtained his PhD in physics from the University of Science and Technology of China (USTC) in 1992. In the same year, he began his research career in USTC and now holds the position of Professor in Physics. His research is focused on the exploration and study of the physics of novel functional materials exhibiting superconductivity, novel magnetism, thermoelectricity, etc.

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Luo, X., Chen, X. Crystal structure and phase diagrams of iron-based superconductors. Sci. China Mater. 58, 77–89 (2015). https://doi.org/10.1007/s40843-015-0022-9

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  • DOI: https://doi.org/10.1007/s40843-015-0022-9

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