Lifting of nodes by disorder in extended-$s$ state superconductors: application to ferropnictides

Abstract

We show, using a simple model, how ordinary disorder can gap an extended-$s$ ($A_{1g}$) symmetry superconducting state with nodes. The concommitant crossover of thermodynamic properties, particularly the $T$-dependence of the superfluid density, from pure power law behavior to an activated one is exhibited. We discuss applications of this scenario to experiments on the ferropnictide superconductors.

9 pages

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Cited by in corpus (27)

• High-temperature superconductivity in iron-based materials
• Momentum dependence and nodes of the superconducting gap in iron-pnictides
• Origin of Gap Anisotropy in Spin Fluctuation Models of the Fe-pnictides
• On the Remarkable Superconductivity of FeSe and its Close Cousins
• Disorder-induced topological change of the superconducting gap structure in iron pnictides
• Magnetic penetration depth of single crystal SmFeAsO_{1-x}F_y: a fully gapped superconducting state
• Optical properties of the iron-arsenic superconductor BaFe1.85Co0.15As2
• Effect of annealing on the specific heat of Ba(Fe1-xCox)2As2
• Unexpected impact of magnetic disorder on multiband superconductivity
• Optical signature of sub-gap absorption in the superconducting state of Ba(Fe,Co)2As2
• Effects of electron irradiation on resistivity and London penetration depth of Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$ ($x\le$ 0.34) iron - pnictide superconductor
• Evolution of the superconducting energy gap structure concomitant with Fermi surface reconstruction in the heavy-fermion superconductor CeCoIn5
• Superconducting fluctuations in the reversible magnetization of the iron-pnictide $B{a}_{1-x}{K}_{x}F{e}_{2}A{s}_2$
• Tuning the Parity Mixing of Singlet-Septet Pairing in a Half-Heusler Superconductor
• Nodes vs. minima in the energy gap of iron-pnictides from field-induced anisotropy
• Vertical loop nodes in iron-based superconductors
• Evolution of London penetration depth with scattering in single crystals of K${}_{1-x}$Na${}_x$Fe${}_2$As${}_2$
• Nodal multigap superconductivity in the anisotropic iron-based compound RbCa2Fe4As4F2
• Superconducting properties of K${}_{1-x}$Na${}_x$Fe${}_2$As${}_2$ under pressure
• Optical properties of the iron-chalcogenide superconductor FeTe0.55Se0.45
• Resistive transition in disordered superconductors with varying intergrain coupling
• THz electrodynamics of BaFe${}_{1.91}$Ni${}_{0.09}$As${}_2$ film analyzed in the framework of multiband Eliashberg theory
• Spectroscopic studies of the superconducting gap in the 12442 family of iron-based compounds
• Constraints Imposed by Symmetry on Pairing Operators for the Pnictides
• The effect of disorder on electronic Raman scattering in the superconducting state of iron pnictides
• Lifting of gap nodes by disorder in ultranodal superconductor candidate FeSe1-xSx
• Decisive proofs of the $s_{\pm }\to s_{++}$ transition in the temperature dependence of the magnetic penetration depth