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arXiv · 1603.04453

Electronic vortex structure of Fe-based superconductors: application to LiFeAs

B. Mencia Uranga·Maria N. Gastiasoro·Brian M. Andersen
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Abstract

Detailed tunneling spectroscopy of vortex core states can provide important insight to the momentum structure of the superconducting order parameter. We present a theoretical study of vortex bound states in iron-based superconductors by use of a realistic five-band model relevant to these systems, and superconductivity stabilized by spin-fluctuation generated pairing vertices yielding an $s\pm$ gap structure. The computed local density of states agrees remarkably well with both the bias dependence of the local conductance and the spatial structure of the low-bias conductance as obtained by scanning tunneling microscopy measurements on LiFeAs [T. Hanaguri et al., Phys. Rev. B 85, 214505 (2012)].

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B. Mencia Uranga, Maria N. Gastiasoro, Brian M. Andersen. 2016-03-14. Electronic vortex structure of Fe-based superconductors: application to LiFeAs. https://doi.org/10.1103/physrevb.93.224503

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