Charge transport through half-metal/iron pnictide superconductors junctions with spin-active interfaces

被引：2
|
作者：
Wu, Xiuqiang [1 ,2 ]
Meng, Hao [3 ]
机构：
[1] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China
[2] Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China
[3] Shanxi Univ Technol, Sch Phys & Telecommun Engn, Hanzhong 723001, Peoples R China
来源：
EUROPEAN PHYSICAL JOURNAL B | 2015年 / 88卷 / 05期
基金：
中国国家自然科学基金;
关键词：
LAYERED SUPERCONDUCTOR; FERROMAGNET; SPECTROSCOPY;
D O I：
10.1140/epjb/e2015-50781-6
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Based on the extended Blonder-Tinkham-Klapwijk formalism, we study the tunneling spectroscopy in a point contact half-metal/iron pnictide superconductors junctions, allowing for the spin-flip scattering at the interfaces. It is shown that the sharp conductance peak has been observed at an energy within superconducting energy gap in the s(+/-) pairing case. In contrast, for the s(++) pairing model, we find the vanishing in-gap conductance peak. Moreover, for the case of s(++) and s(+/-) pairing model, the sugap conductance is insensitive to the different superconducting gap ratio. Our results will provide a useful new experimental methods to identify the gap symmetry of the iron pnictide SC.
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页数：5
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