Spin Glass and Semiconducting Behavior in 1D BaFe2-δSe3 Crystals

Abstract

We investigate the physical properties and electronic structure of BaFe2-δSe3 crystals, which were grown out of tellurium flux. The crystal structure of the compound, an iron-deficient derivative of the ThCr2Si2-type, is built upon edge-shared FeSe4 tetrahedra fused into double chains. The semiconducting BaFe2-δSe3 with δ \approx 0.2 (ρ295K = 0.18 Ω\cdotcm and Eg = 0.30 eV) does not order magnetically, however there is evidence for short-range magnetic correlations of spin glass type (Tf \approx 50 K) in magnetization, heat capacity and neutron diffraction results. A one-third substitution of selenium with sulfur leads to a slightly higher electrical conductivity (ρ295K = 0.11 Ω\cdotcm and Eg = 0.22 eV) and a lower spin glass freezing temperature (Tf \approx 15 K), corroborating with higher electrical conductivity reported for BaFe2S3. According to the electronic structure calculations, BaFe2Se3 can be considered as a one-dimensional ladder structure with a weak interchain coupling.

17 pages, 9 figures

References in corpus (6)

• Density functional study of FeS, FeSe and FeTe: Electronic structure, magnetism, phonons and superconductivity
• A Novel Large Moment Antiferromagnetic Order in K0.8Fe1.6Se2 Superconductor
• Microstructure and Fe-vacancy ordering in the KFexSe2 superconducting system
• Iron Displacements and Magnetoelastic Coupling in the Spin-Ladder Compound BaFe2Se3
• Phase Diagram of KxFe2-ySe2-zSz and the Suppression of its Superconducting State by an Fe2-Se/S Tetrahedron Distortion
• Synthesis, crystal and magnetic structure of iron selenide BaFe2Se3 with possible superconductivity at Tc=11K

Cited by in corpus (35)

• The Unexpected Properties of Alkali Metal Iron Selenide Superconductors
• Pressure-induced Superconductivity in the Iron-based Ladder Material BaFe2S3
• Orbital Selective Magnetism in the Spin-Ladder Iron Selenides Ba${}_{1-x}$K${}_x$Fe${}_2$Se${}_3$
• Block magnetism coupled with local distortion in the iron-based spin-ladder compound BaFe2Se3
• BaFe${}_2$Se${}_3$: a high $T_{\mathrm{C}}$ magnetic multiferroic with large ferrielectric polarization
• Block magnetic excitations in the orbitally selective Mott insulator BaFe2Se3
• Magnetic States of the Two-Leg Ladder Alkali Metal Iron Selenides $A$Fe${}_2$Se${}_3$
• Sequential structural and antiferromagnetic transitions in BaFe${}_2$Se${}_3$ under pressure
• Pressure-driven phase transition from antiferromagnetic semiconductor to nonmagnetic metal in two-leg ladders $A$Fe${}_2$$X$${}_3$ ($A$=Ba or K, $X$=S or Se)
• Magnetic properties and pairing tendencies of the iron-based superconducting ladder BaFe${}_2$S${}_3$: combined ab initio and density matrix renormalization group study
• Ab initio downfolding study of the iron-based ladder superconductor BaFe${}_2$S${}_3$
• First-principles study of magnetic properties in Fe-ladder compound BaFe2S3
• Crystal Structure of BaFe2Se3 as a Function of Temperature and Pressure: Phase Transition Phenomena and High-Order Expansion of Landau Potential
• Spin waves and magnetic exchange interactions in the spin ladder compound RbFe${}_2$Se${}_3$
• Pairing Tendencies in a Two-orbital Hubbard Model in One Dimension
• BaFe2Se2O as an Iron-Based Mott Insulator with Antiferromagnetic Order
• Magnetic states of iron-based two-leg ladder tellurides
• Strong ferromagnetic exchange interaction in the parent state of the superconductivity in BaFe${}_2$S${}_3$
• High-pressure polymorphism of BaFe2Se3
• Electronic structure of iron-based superconductors: from pnictides to chalcogenides and other similar systems
• Magnetic states of the five-orbital Hubbard model for one-dimensional iron-based superconductors
• Robust block magnetism in the spin ladder compound BaFe${}_2$Se${}_3$ under hydrostatic pressure
• Iron-based superconductors: tales from the nuclei
• Electronic and Magnetic Structures of Chain Structured Iron Selenide Compounds
• Non-superconducting electronic ground state in pressurized BaFe${}_2$S${}_3$ and BaFe${}_2$S${}_{2.5}$Se${}_{0.5}$
• Pressure-Induced Metallization in Iron-Based Ladder Compounds Ba${}_{1-x}$Cs${}_x$Fe${}_2$Se${}_3$
• Crystal structure and properties of iron-based spin-chain compound Ba9Fe3Se15
• Magnetic-order-driven metal-insulator transitions in the quasi-one-dimensional spin-ladder compounds BaFe${}_2$S${}_3$ and BaFe${}_2$Se${}_3$
• New iron-based multiferroics with improper ferroelectricity
• Phonon and magnetic dimer excitations in Fe-based S=2 spin ladder compound BaFe${}_2$Se${}_2$O
• Structural, magnetic, and electronic evolution of the spin-ladder system BaFe${}_2$S${}_{3-x}$Se${}_x$ with isoelectronic substitution
• Intertwined charge, spin, and pairing orders in doped iron ladders
• Spin interactions and magnetic order in the iron oxychalcogenides BaFe2Q2O
• Pressure-induced superconductivity in iron-based spin-ladder compound BaFe2+δ(S1-Sex)3
• The role of the nominal iron content in the structural, compositional and physical properties of BaFe${}_{2+\delta }$S${}_3$