Staggered FeSe Monolayer on SrTiO${}_3$ (110) surface

Abstract

We investigate the electronic and magnetic properties of FeSe monolayer on the anisotropic SrTiO${}_3$ (110) surface. With compressive strain along $[1\bar{1}0]$ direction from the substrate, the monolayer FeSe possesses a staggered bipartite iron lattice with an height difference around 0.06Å~ along the out-plane direction. The staggering causes stronger magnetic frustration between the collinear and checkerboard antiferromagnetic orders, and the strain elongates one electron and two hole pockets along the strain direction and the remaining hole pocket along the orthogonal direction. The strain-induced band splitting at $\Gamma$ can also result in a band inversion to drive the system into a topologically nontrivial phase. The absence of strong superconducting suppression on the staggered lattice suggests that the superconducting pairings may be insensitive to the modification of interactions and hopping parameters between two Fe sublattices.

arXiv comment7 Pagges, 9 figures

References in corpus (28)

• Unconventional sign-reversing superconductivity in LaFeAsO_(1-x)F_x
• Interface induced high temperature superconductivity in single unit-cell FeSe films on SrTiO3
• Phase Diagram and High Temperature Superconductivity at 65 K in Tuning Carrier Concentration of Single-Layer FeSe Films
• Density functional study of FeS, FeSe and FeTe: Electronic structure, magnetism, phonons and superconductivity
• Interfacial mode coupling as the origin of the enhancement of Tc in FeSe films on SrTiO3
• Interface-induced superconductivity and strain-dependent spin density wave in FeSe/SrTiO3 thin films
• Superconductivity close to magnetic instability in Fe(Se1-xTex)0.82
• Tellurium substitution effect on superconductivity of the alpha-phase Iron Selenide
• Thorium-doping induced superconductivity up to 56 K in Gd1-xThxFeAsO
• Orbital Fluctuation Mediated Superconductivity in Iron Pnictides: Analysis of Five Orbital Hubbard-Holstein Model
• Pressure evolution of low-temperature crystal structure and bonding of 37 K $T_c$ FeSe superconductor
• Electronic Origin of High Temperature Superconductivity in Single-Layer FeSe Superconductor
• Pairing Symmetry in a Two-Orbital Exchange Coupling Model of Oxypnictides
• Effect of magnetic frustration on nematicity and superconductivity in Fe chalcogenides
• Topological nature of FeSe${}_{0.5}$Te${}_{0.5}$ superconductor
• Observation of a Robust Zero-energy Bound State in Iron-based Superconductor Fe(Te,Se)
• Interface induced high temperature superconductivity in single unit-cell FeSe films on SrTiO3(110)
• Topological Characters in Fe(Te${}_{1-x}$Se${}_x$) thin films
• Local antiferromagnetic exchange and collaborative Fermi surface as key ingredients of high temperature superconductors
• Atomic and electronic structures of FeSe monolayer and bilayer thin films on SrTiO${}_3$ (001): a first-principles study
• Topological Phases in the Single-Layer FeSe
• Antiferromagnetic ground state with pair-checkboard order in FeSe
• The interfacial effects on the spin density wave in FeSe/SrTiO3 thin film
• Effects of charge doping and constrained magnetization on the electronic structure of an FeSe monolayer
• Accurate Modeling of the Cubic and Antiferrodistortive Phases of SrTiO3 with Screened Hybrid Density Functional Theory
• Do Se vacancies electron dope monolayer FeSe?
• A general group theoretical method to unfold band structures and its application
• Reversible Transition Between Thermodynamically Stable Phases with Low Density of Oxygen Vacancies on SrTiO${}_3$(110) Surface

Cited by in corpus (2)

• Ubiquitous strong electron phonon coupling at the interface of FeSe/SrTiO3
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