Doping Driven ($\pi ,0$) Nesting and Magnetic Properties of Fe${}_{1+x}$Te Superconductors

Abstract

To understand newly discovered superconductivity in Fe--based systems, we investigate electronic structure and magnetic properties of Fe${}_{1+x}$Te using first--principles density functional calculations. While the undoped FeTe has the same Fermi surface nested at ($\pi ,\pi$) as in Fe arsenides, doping by $\sim 0.5$ electrons reveals a novel square--type Fermi surface showing a strong ($\pi ,0$) nesting and leading to a different magnetic structure. Our result strongly supports the same mechanism of superconductivity in chalcogenides as in the arsenides, reconciling theory to existing experiments. Calculated magnetic interactions are found to be critically dependent on doping and notably different from the arsenides.

Table updated and discussion included

References in corpus (23)

• Superconductivity at 38 K in the iron arsenide (Ba1-xKx)Fe2As2
• Unconventional sign-reversing superconductivity in LaFeAsO_(1-x)F_x
• Magnetic Order versus superconductivity in the Iron-based layered La(O1-xFx)FeAs systems
• Density functional study of FeS, FeSe and FeTe: Electronic structure, magnetism, phonons and superconductivity
• LiFeAs: An Intrinsic FeAs-based Superconductor with Tc = 18K
• Superconductivity at 27 K in tetragonal FeSe under high pressure
• Linear-response theory and lattice dynamics: a muffin-tin orbital approach
• Extreme Sensitivity of Superconductivity to Stoichiometry in FeSe (Fe1+dSe)
• Superconductivity close to magnetic instability in Fe(Se1-xTex)0.82
• Tellurium substitution effect on superconductivity of the alpha-phase Iron Selenide
• Incommensurate magnetic order in the alpha-Fe(Te,Se) superconductor systems
• First-order magnetic and structural phase transitions in Fe${}_{1+y}$Se${}_x$Te${}_{1-x}$
• Electronic Structure and Doping in BaFe${}_2$As${}_2$ and LiFeAs: Density Functional Calculations
• The challenge of unravelling magnetic properties in LaFeAsO
• Multiband magnetism and superconductivity in Fe-based compounds
• Electron-Hole Symmetry and Magnetic Coupling in Antiferromagnetic LaOFeAs
• Superconductivity in S-substituted FeTe
• A key role for unusual spin dynamics in ferropnictides
• Electronic Structure of Fe-Based Superconductors
• Exchange interaction parameters and adiabatic spin-wave spectra of ferromagnets: A "renormalized magnetic force theorem"
• Anisotropy, Itineracy, and Magnetic Frustration in High-Tc Iron Pnictides
• Calculations of Magnetic Exchange Interactions in Mott--Hubbard Systems
• Competition between Kondo and RKKY exchange couplings in Pu{1-x}Am{x} alloys

Cited by in corpus (51)

• The Puzzle of High Temperature Superconductivity in Layered Iron Pnictides and Chalcogenides
• The crystal structure of FeSe0.44Te0.56
• Charge carrier localization induced by excess Fe in the Fe1+y(Te,Se) superconductor system
• Unified Picture for Magnetic Correlations in Iron-Based Superconductors
• Superconductivity in iron telluride thin films under tensile stress
• Chalcogen-height dependent magnetic interactions and magnetic order switching in FeSe${}_x$Te${}_{1-x}$
• Magnetic-crystallographic phase diagram of superconducting parent compound Fe${}_{1+x}$Te
• Interplay between magnetism and superconductivity in iron-chalcogenide superconductors: crystal growth and characterizations
• Magnetism, Superconductivity and Stoichiometry in Single Crystals of Fe1+y(Te1-xSx)z
• Spin waves in the $(\pi ,0)$ magnetically ordered iron chalcogenide Fe${}_{1.05}$Te
• Physics and chemistry review of layered chalcogenide superconductors
• Kinetic Magnetism and Orbital Order in Iron Telluride
• Electronic correlations and unusual superconducting response in the optical properties of the iron-chalcogenide FeTe0.55Se0.45
• An unified minimum effective model of magnetism in iron-based superconductors
• Microscopic origin of pressure-induced phase transitions in iron-pnictide $AF{e}_{2}A{s}_2$ superconductors: an {ab initio} molecular-dynamics study
• Continuous magnetic and structural phase transitions in Fe1+yTe
• Hall effect in superconducting Fe(Se0.5Te0.5) thin films
• Strong correlation and massive spectral-weight redistribution induced spin density wave in a-Fe1.06Te
• The magnetic and structural properties near the Lifshitz point in Fe1+xTe
• Phonon, Two-Magnon and Electronic Raman Scattering of Fe1+yTe1-xSex
• Anomalous optical phonons in FeTe pnictides: spin state, magnetic order, and lattice anharmonicity
• Electronic Structure, Localization and Spin-State Transition in Cu-substituted FeSe: Fe${}_{1-x}$Cu${}_x$Se
• Reliability and applicability of magnetic force linear response theory: Numerical parameters, predictability, and orbital resolution
• Magneto-elastic quantum fluctuations and phase transitions in the iron superconductors
• Itinerant Nature of Magnetism in Iron Pnictides: A first principles study
• Anomalous dependence of the c-axis polarized Fe B${}_{1g}$ phonon mode with Fe and Se concentrations in Fe${}_{1+y}$Te${}_{1-x}$Se${}_x$
• Theory of the evolution of magnetic order in Fe${}_{1+y}$Te compounds with increasing interstitial iron
• The substitution effects on electronic structure of iron selenide superconductors
• Magnetoelastic Effects in Iron Telluride
• Phonon anomalies in some iron-telluride materials
• Clarification as to why alcoholic beverages have the ability to induce superconductivity in Fe_{1+d}Te_{1-x}S_x
• Magnetism and superconductivity in Fe${}_{1+y}$Te${}_{1-x}$Se${}_x$
• Dynamical mean-field study of Vanadium diselenide monolayer ferromagnetism
• Hidden $(\pi ,0)$ instability as an itinerant origin of bicollinear antiferromagnetism in Fe${}_{1+x}$Te
• Competing spin density wave, collinear, and helical magnetism in Fe1+xTe
• Common origin of the two types of magnetic fluctuations in iron chalcogenides
• Optical properties of the iron-chalcogenide superconductor FeTe0.55Se0.45
• Brief review on iron-based superconductors: are there clues for unconventional superconductivity?
• Comment on "Doping Driven ($\pi ,0$) Nesting and Magnetic Properties of Fe${}_{1+x}$Te Superconductors" [Phys. Rev. Lett. 103, 067001 (2009)]
• Sulfur annealing effect for superconductivity in iron chalcogenide compounds
• Magnetic properties of FeSe superconductor
• Magnetic neutron scattering studies on the Fe-based superconductor system Fe${}_{1+y}$Te${}_{1-x}$Se${}_x$
• Electronic Structure of Fe${}_{1.08}$Te bulk crystals and epitaxial FeTe thin films on Bi${}_2$Te${}_3$
• Superconductivity in FeTe0.8S0.2 induced by battery-like reaction
• Substitution of Ni for Fe in superconducting Fe${}_{0.98}$Te${}_{0.5}$Se${}_{0.5}$ depresses the normal-state conductivity but not the magnetic spectral weight
• Field-Induced Magnetostructural Transitions in Antiferromagnetic Fe1+yTe1-xSx
• Magnetic Properties Controlled by Interstitial or Interlayer Cations in Iron Chalcogenides
• Superconductivity in FeTe{1-x}S_x induced by electrochemical reaction using ionic liquid solution
• Fermiological Interpretation of Superconductivity/Non-superconductivity of FeTe_{1-x}Se_{x} Thin Crystal Determined by Quantum Oscillation Measurement
• Study of the itinerant electron magnetism of Fe-based superconductors by the proximity effect
• Spin-dependent conductivity of iron-based superconductors in a magnetic field