The Signature of Weak Interband Coupling in Iron Pnictides: a Probe of the Superfluid Density

被引：0
|
作者：
Haiyang Zhang
Xiuqiang Wu
Fanjie Kong
Ning Xu
机构：
[1] Yancheng Institute of Technology,Department of Physics
来源：
Journal of Superconductivity and Novel Magnetism | 2019年 / 32卷
关键词：
Iron-based superconductivity; Superfluid density; Interband pairing; Gap anisotropy;
D O I：
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中图分类号：
学科分类号：
摘要：
We study the temperature evolution behaviors of the superfluid density in the iron-based superconductors based on the two-orbital t − J1 − J2 model. It was revealed that the superfluid density exhibits the exotic positive curvature behavior when approaching Tc. The theoretical results are qualitatively consistent with the experimental observations. The positive curvature behavior of the superfluid density is attributed to the effects of the weak interband pairing coupling. Combining with the experimental observations, this indicates that the interband coupling strength is distinct between different iron-based compounds.
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页码：1213 / 1217
页数：4
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