Studies of the gap structure of iron-based superconductors using magnetic penetration depth
Studies of the gap structure of iron-based superconductors using magnetic penetration depth
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DOI：
10.1016/j.crhy.2011.03.001
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发表时间：
2011-06-01
影响因子：
1.4
通讯作者：
Carrington, Antony
中科院分区：
文献类型：
--
作者：
Carrington, Antony
本文综述了确定铁基超导体超导能隙结构的实验。它侧重于磁穿透深度的温度依赖性的测量提供的见解，但也讨论了其他测量，特别是热导率提供的信息。本文包括铁基超导体的间隙结构类型的背景理论，以及常规和非常规超导体的穿透深度的一般理论。杂质散射对每个候选的间隙结构的影响是重要的数据的解释，因此也将进行讨论。本文综述了SmFeAsO_（0.8）F_（0.2）、FeTe_（0.5）Se_（0.5）、LaFePO、KFe_2As_2和BaFe_2（As_（0.67）P_（0.33））（2）单晶的穿透深度数据，沿着讨论了相关材料，如K和Co掺杂的BaFe_2As_2。(c)2011年，科学院。由Elsevier Masson SAS出版。All rights reserved.
This article reviews experiments to determine the structure of the superconducting gap in the iron-based superconductors. It focuses on insights provided by measurements of the temperature dependence of magnetic penetration depth but also discusses the information provided by other measurements especially thermal conductivity. The article includes background theory on the types of gap structure suggested for the iron-based superconductors as well as the general theory of penetration depth in conventional and unconventional superconductors. The effect of impurity scattering on each candidate gap structure is important for the interpretation of data and so will also be discussed. Penetration depth data for single crystals of the following compounds is reviewed: SmFeAsO0.8F0.2, FeTe0.5Se0.5, LaFePO, KFe2As2 and BaFe2(As0.67P0.33)(2) along with discussion on related materials such as K- and Co-doped BaFe2As2. (c) 2011 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.