Properties of a diagonal 2-orbital ladder model of the Fe-pnictide superconductors

Abstract

We study a diagonal 2-orbital ladder model of the Fe based superconductors using the density matrix renormalization group method. At half filling, we find a close competition between a "spin-striped" state and a non-collinear "spin-checkerboard" state, as well as significant nematic correlations. Upon finite hole or electron doping, the dominant pairing correlations are found to have A${}_{1,g}$ ($S-$wave) symmetry.

4 pages, 5 figures; Published version

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• Proximity of Iron Pnictide Superconductors to a Quantum Tricritical Point
• $S_4$ Symmetric Microscopic Model for Iron-Based Superconductors
• Vestigial chiral and charge orders from bidirectional spin-density waves: Application to the iron-based superconductors
• Quantum Monte Carlo Study of Pairing Symmetry and Correlation in Iron-based Superconductors
• Magnetic order without tetragonal-symmetry-breaking in iron arsenides: microscopic mechanism and spin-wave spectrum
• S-wave superconductivity with orbital dependent sign change in the checkerboard models of iron-based superconductors
• Expansion of the tetragonal magnetic phase with pressure in the iron-arsenide superconductor Ba{1-x}KxFe2As2
• Metastable $\pi$-junction between an s${}_{\pm }$-wave and an s-wave superconductor
• Impact of local-moment fluctuations on the magnetic degeneracy of iron arsenide superconductors
• Ground state pairing correlations in the $S_4$ symmetric microscopic model for iron-based superconductors
• Superconductivity in a single layer alkali-doped FeSe: a weakly coupled two-leg ladder system
• Implementation of the SU(2) Hamiltonian Symmetry for the DMRG Algorithm
• Weak Gravity Conjecture From Low Energy Observers' Perspective
• Fractional charge and emergent mass hierarchy in diagonal two-leg t-J cylinders
• Magnetic and pairing properties of a two-orbital model for the pnictide superconductors: A quantum Monte Carlo study
• Metal-insulator transition and superconductivity in the two-orbital Hubbard-Holstein model for iron-based superconductors
• A Short Review of the $S_4$ Symmetric Microscopic Model for Iron-Based High Temperature Superconductors