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

Xiuqiang Wu () and Hao Meng

The European Physical Journal B: Condensed Matter and Complex Systems, 2015, vol. 88, issue 5, 1-5

Abstract: 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. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2015

Keywords: Solid State and Materials (search for similar items in EconPapers)
Date: 2015
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DOI: 10.1140/epjb/e2015-50781-6

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