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

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)].

arXiv comment7 pages, 6 figures

References in corpus (41)

• Scanning tunneling spectroscopy of high-temperature superconductors
• Superconducting Vortex with Antiferromagnetic Core
• Superconductivity without magnetism in LiFeAs
• Scanning Tunneling Spectroscopy and Vortex Imaging in the Iron-Pnictide Superconductor BaFe${}_{1.8}$Co${}_{0.2}$As${}_2$
• Observation of a Robust Zero-energy Bound State in Iron-based Superconductor Fe(Te,Se)
• Spectroscopic scanning tunneling microscopy insights into Fe-based superconductors
• Using Gap Symmetry and Structure to Reveal the Pairing Mechanism in Fe-based Superconductors
• Spin dynamics and an orbital-antiphase pairing symmetry in iron-based superconductors
• Unconventional Anisotropic s-Wave Superconducting Gaps of LiFeAs Iron-Pnictide Superconductor
• Phase diagram and Gap anisotropy in Iron-Pnictide Superconductors
• Scanning Tunneling Microscopy/Spectroscopy of Vortices in LiFeAs
• Observation of Lattice and Andreev Bound States of Vortices in Ba0.6K0.4Fe2As2 Single Crystals with Scanning Tunneling Microscopy/Spectroscopy
• One-sign order parameter in iron based superconductor
• Incommensurate Magnetism around Vortices and Impurities in High-$T_c$ Superconductors
• First-principles calculation of transition-metal impurities in LaFeAsO
• Superconductivity from repulsion in LiFeAs: novel s-wave symmetry and potential time-reversal symmetry breaking
• Superconducting gap in LiFeAs from three-dimensional spin-fluctuation pairing calculations
• Competition of Superconductivity and Antiferromagnetism in a d-Wave Vortex Lattice
• Bound States of Defects in Superconducting LiFeAs Studied by Scanning Tunneling Spectroscopy
• Sign inversion in the superconducting order parameter of LiFeAs inferred from Bogoliubov quasiparticle interference
• Theory of Magnetic Field Induced Spin Density Wave in High Temperature Superconductors
• Impurity states and cooperative magnetic order in Fe-based superconductors
• Single Impurity Problem in Iron-Pnictide Superconductors
• SO(5) theory of insulating vortex cores in high-$T_c$ materials
• Disorder- and Field-Induced Antiferromagnetism in Cuprate Superconductors
• Anisotropic vortex lattice structures in the FeSe superconductor
• Vortex states in hole-doped iron-pnictide superconductors
• NMR relaxation time around a vortex in stripe superconductors
• Theory of quasiparticle vortex bound states in Fe-based superconductors: application to LiFeAs
• Revisit of the Orbital-Fluctuation-Mediated Superconductivity in LiFeAs: Nontrivial Spin-Orbit Interaction Effects on the Bandstructure and Superconducting Gap Function
• Unexpected weak spatial variation of local density of sates induced by individual Co impurity atoms in Na(Fe{1-x}Cox)As as revealed by scanning tunneling spectroscopy
• Vortex state in iron-based superconductors with collinear antiferromagnetic cores
• Nematic order in the vicinity of a vortex in superconducting FeSe
• Single vortex structure in two models of iron pnictide $s^{\pm }$ superconductivity
• Effects of impurities and vortices on the low-energy spin excitations in high-Tc materials
• Recursion method for the quasiparticle structure of a single vortex with induced magnetic order
• Competing superconducting and magnetic order parameters and field-induced magnetism in electron doped Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$
• Impurity bound states and disorder-induced orbital and magnetic order in the s+- state of Fe-based superconductors
• Signatures of unconventional pairing in near-vortex electronic structure of LiFeAs
• Local spin-density-wave order inside vortex cores in multiband superconductors
• Orbital-resolved vortex core states in FeSe Superconductors: calculation based on a three-orbital model

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• On the Remarkable Superconductivity of FeSe and its Close Cousins
• Tunable vortex Majorana zero modes in LiFeAs superconductor
• Observation of Caroli-de Gennes-Matricon Vortex States in YBa${}_2$Cu${}_3$O${}_{7-\delta }$
• Pure Odd Frequency Superconductivity at the Cores of Proximity Vortices
• Quantum phase transition of correlated iron-based superconductivity in LiFe${}_{1-x}$Co${}_x$As
• Towards a quantitative description of tunneling conductance of superconductors: application to LiFeAs
• Vector field controlled vortex lattice symmetry in LiFeAs
• Origin of Topological Surface Superconductivity in FeSe${}_{0.45}$Te${}_{0.55}$
• Vortex spectroscopy in the vortex glass: A real-space numerical approach
• Signatures of nodeless multiband superconductivity and particle-hole crossover in the vortex cores of FeTe${}_{0.55}$Se${}_{0.45}$