Local magnetization nucleated by non-magnetic impurities in Fe-based superconductors

Abstract

We study impurity-induced magnetic order within a five-band Hubbard model relevant to the normal paramagnetic phase of iron-based superconductors. The existence of the local magnetic order is explained in terms of an impurity-enhancement of states near the Fermi level, and we map out the resulting phase diagram of the existence of magnetization as a function of impurity strength and Coulomb correlations. In particular, the presence of impurity-induced magnetism in only a certain range of potential scattering strengths can be understood from the specific behavior of the impurity resonant state.

arXiv comment8 pages, 3 figures

References in corpus (28)

• Evidence for an electron nematic phase transition in underdoped iron pnictide superconductors
• Divergent nematic susceptibility in an iron arsenide superconductor
• Defects in correlated metals and superconductors
• Superconducting Vortex with Antiferromagnetic Core
• Visualization of Electron Nematicity and Unidirectional Antiferroic Fluctuations at High Temperatures in NaFeAs
• Phase diagram and Gap anisotropy in Iron-Pnictide Superconductors
• Anisotropic Impurity-States, Quasiparticle Scattering and Nematic Transport in Underdoped Ca(Fe1-xCox)2As2
• Incommensurate Magnetism around Vortices and Impurities in High-$T_c$ Superconductors
• Suppression of Superconductivity by Twin Boundaries in FeSe
• Anisotropy of the in-plane resistivity of underdoped Ba(Fe${}_{1-x}$Co${}_x$)${}_2$As${}_2$ superconductors induced by impurity scattering in the antiferromagnetic orthorhombic phase
• Disorder-Induced Static Antiferromagnetism in Cuprate Superconductors
• States of Local Moment Induced by Nonmagnetic Impurities in Cuprate Superconductors
• Bound States of Defects in Superconducting LiFeAs Studied by Scanning Tunneling Spectroscopy
• Disorder-induced freezing of dynamical spin fluctuations in underdoped cuprates
• Antiferromagnetic correlations and impurity broadening of NMR linewidths in cuprate superconductors
• Local Moment Formation in the Superconducting State of a Doped Mott Insulator
• Enhancing magnetic stripe order in iron pnictides by RKKY exchange interactions
• Theory of Magnetic Field Induced Spin Density Wave in High Temperature Superconductors
• Impurity states and cooperative magnetic order in Fe-based superconductors
• Effect of doping on the magnetostructural ordered phase of iron arsenides: A comparative study of the resistivity anisotropy in the doped BaFe${}_2$As${}_2$ with doping into three different sites
• Emergent defect states as a source of resistivity anisotropy in the nematic phase of iron pnictides
• SO(5) theory of insulating vortex cores in high-$T_c$ materials
• Quasiparticle interference of C2-symmetric surface states in LaOFeAs parent compound
• NMR relaxation time around a vortex in stripe superconductors
• Origin of electronic dimers in the spin-density wave phase of Fe-based superconductors
• Impurity bound states and disorder-induced orbital and magnetic order in the s+- state of Fe-based superconductors
• Magnetic field-induced soft mode in spin-gapped high-Tc superconductors
• Pinning of stripes by local structural distortions in cuprate high-Tc superconductors

Cited by in corpus (7)

• Enhancing Superconductivity by Disorder
• Unconventional disorder effects in correlated superconductors
• Theoretical study of impurity-induced magnetism in FeSe
• Supercurrents and spontaneous time-reversal symmetry breaking by nonmagnetic disorder in unconventional superconductors
• Visualization of local magnetic moments emerging from impurities in the Hund's metal states of FeSe
• Time-reversal symmetry breaking from lattice dislocations in superconductors
• Superstripes in the Low Energy Physics of Complex Quantum Matter at the Mesoscale