Consistent picture for the electronic structure around a vortex core in iron-based superconductors

Abstract

Based on a two-orbital model and taking into account the presence of the impurity, we studied theoretically the electronic structure in the vortex core of the iron-Pnictide superconducting materials. The vortex is pinned when the impurity is close to the vortex core. The bound states shows up for the unpinned vortex and are wiped out by a impurity. Our results are in good agreement with recent experiments and present a consistent explanation for the different electronic structure of vortex core revealed by experiments on different materials.

4 pages, 5 figures

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Cited by in corpus (9)

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• Superfluid density in the $s_{\pm }$-wave state of clean iron-based superconductors
• Tunneling interstitial impurity in iron-chalcogenide based superconductors
• Signatures of nodeless multiband superconductivity and particle-hole crossover in the vortex cores of FeTe${}_{0.55}$Se${}_{0.45}$
• Effect of transition-metal substitution in iron-based superconductors
• Signatures of unconventional pairing in near-vortex electronic structure of LiFeAs
• Orbital-resolved vortex core states in FeSe Superconductors: calculation based on a three-orbital model