An unified minimum effective model of magnetism in iron-based superconductors

Abstract

Since 2008, many new families of iron-based high temperature (high-$T_c$) superconductors have been discovered \cite{Hosono,ChenXH,FeTe,ChenXL}. Unlike all parent compounds of cuprates that share a common antiferromagnetically (AF) ordered ground state, those of iron-based superconductors exhibit many different AF ordered ground states, including collinear-AF (CAF) state in ferropnictides \cite{caf}, bicollinear-AF (BCAF) state in 11-ferrochalcogenide $FeTe$ \cite{bcaf,bcaf2}, and block-AF (BAF) state in 122-ferrochalcogenide $K_{0.8}F{e}_{1.6}S{e}_2$ \cite{baf}. While the universal presence of antiferromagnetism suggests that superconductivity is strongly interrelated with magnetism, the diversity of the AF ordered states obscures their interplay. Here we show that all magnetic phases can be unified within an effective magnetic model. This model captures three incommensurate magnetic phases, two of which have been observed experimentally. The model characterizes the nature of phase transitions between the different magnetic phases and explains a variety of magnetic properties, such as spin-wave spectra and electronic nematism. Most importantly, by unifying the understanding of magnetism, we cast new insight on the key ingredients of magnetic interactions which are critical to the occurrence of superconductivity.

7 pages, 4 figures

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Cited by in corpus (44)

• Antiferromagnetic order and spin dynamics in iron-based superconductors
• Effect of magnetic frustration on nematicity and superconductivity in Fe chalcogenides
• Higher-order exchange interactions in two-dimensional magnets
• Manifestations of nematic degrees of freedom in the magnetic, elastic, and superconducting properties of the iron pnictides
• Observation of two distinct $d_{xz}/d_{yz}$ band splittings in FeSe
• Antiferroquadrupolar and Ising-Nematic Orders of a Frustrated Bilinear-Biquadratic Heisenberg Model and Implications for the Magnetism of FeSe
• Local antiferromagnetic exchange and collaborative Fermi surface as key ingredients of high temperature superconductors
• Enhancement of the superconducting gap by nesting in CaKFe4As4 - a new high temperature superconductor
• Magnetic interactions in iron superconductors: A review
• $S_4$ Symmetric Microscopic Model for Iron-Based Superconductors
• Orbital Origin of Extremely Anisotropic Superconducting Gap in Nematic Phase of FeSe Superconductor
• Quantum Monte Carlo Study of Pairing Symmetry and Correlation in Iron-based Superconductors
• Imaging the coexistence of superconductivity and a charge density modulation in K0.73Fe1.67Se2 superconductor
• Nematic orders in Iron-based superconductors
• Hydrostatic and uniaxial pressure tuning of iron-based superconductors: Insights into superconductivity, magnetism, nematicity and collapsed tetragonal transitions
• Magnetism in parent Fe-chalcogenides: quantum fluctuations select a plaquette order
• Theory of the evolution of magnetic order in Fe${}_{1+y}$Te compounds with increasing interstitial iron
• Possible Nematic Spin Liquid in Spin-$1$ Antiferromagnetic System on the Square Lattice: Implication for the Nematic Paramagnetic State of FeSe
• Phase-manipulation-induced Majorana Mode and Braiding Realization in Iron-based Superconductor Fe(Te,Se)
• Magnetic interactions in iron superconductors studied with a five-orbital model within the Hartree-Fock and Heisenberg approximations
• Kondo interaction in FeTe and its potential role in the magnetic order
• Magnetism and superconductivity in the layered hexagonal transition metal pnictides
• Spin and quadrupolar orders in the spin-1 bilinear-biquadratic model for iron-based superconductors
• Giant biquadratic interaction induced magnetic anisotropy in the iron-based superconductor AxFe2-ySe2
• Competing spin density wave, collinear, and helical magnetism in Fe1+xTe
• Spin excitations in K${}_2$Fe${}_{4+x}$Se${}_5$: linear response approach
• Ground state pairing correlations in the $S_4$ symmetric microscopic model for iron-based superconductors
• Topological crystalline antiferromagnetic state in tetragonal FeS
• Electronic and Magnetic Structures of Chain Structured Iron Selenide Compounds
• Competing magnetic interactions in spin-1/2 square lattice: hidden order in Sr${}_2$VO${}_4$
• Transitions from a Kondo-like diamagnetic insulator into a modulated ferromagnetic metal in ${\mathrm{FeGa}}_{3-\mathbf{y}}{\mathrm{Ge}}_{\mathbf{y}}$
• Observation of isosceles triangular electronic structure around excess iron atoms in Fe${}_{1+\delta }$Te
• Role of Fermi surface for the pressure-tuned nematic transition in the BaFe${}_2$As${}_2$ family
• Tuning the magnetic and structural phase transitions of PrFeAsO via Fe/Ru spin dilution
• Quantum phase transition between spin liquid and spin nematics in spin-1 Kitaev honeycomb model
• Dynamic approach to finite-temperature magnetic phase transitions in the extended J1- J2 model with vacancy order
• Oriented gap opening in the magnetically ordered state of Iron-pnicitides: an impact of intrinsic unit cell doubling on the $Fe$ square lattice by $As$ atoms
• Longitudinal modes of spin fluctuations in iron-based superconductors
• Uncovering double-stripe and plaquette antiferromagnetic states in the one-band Hubbard model on a frustrated square lattice
• Indirect K-edge bimagnon resonant inelastic X-ray scattering spectrum of $\alpha$-FeTe
• An improved particle swarm optimization algorithm and its application to search for new magnetic ground states in the Hubbard model
• Detecting Crystallographic Lattice Chirality using Resonant Inelastic X-ray Scattering
• A Short Review of the $S_4$ Symmetric Microscopic Model for Iron-Based High Temperature Superconductors
• Iron-Based Superconductors as Parity Odd Superconductors