Pressure-induced superconductivity in iron-based spin-ladder compound BaFe2+δ(S1-Sex)3

Abstract

The iron-based superconductors had a significant impact on condensed matter physics. They have a common structural motif of a two-dimensional square iron lattice and exhibit fruitful physical properties as a strongly correlated electron system. During the extensive investigations, quasi-one-dimensional iron-based spin-ladder compounds attracted much attention as a platform for studying the interplay between magnetic and orbital ordering. In these compounds, BaFe2S3 and BaFe2Se3 were found to exhibit superconductivity under high pressure, having a different crystal and magnetic structure at low temperature. We report a brief review of the iron-based spin-ladder compound and recent studies for BaFe2+d(S1-xSex)3. BaFe2(S0.75 Se0.25)3 is in the vicinity of the boundary of two different magnetic phases and it is intriguing to perform high pressure experiments for studying superconductivity, since effects of large magnetic fluctuations on superconductivity are expected. The effect of iron stoichiometry on the interplay between magnetism and superconductivity is also studied by changing the iron concentration in BaFe2+dSe3.

arXiv comment13 pages, 9 figures

References in corpus (22)

• Unconventional sign-reversing superconductivity in LaFeAsO_(1-x)F_x
• Unconventional pairing originating from disconnected Fermi surfaces in superconducting LaFeAsO${}_{1-x}$F${}_x$}
• Magnetism and its microscopic origin in iron-based high-temperature superconductors
• The Unexpected Properties of Alkali Metal Iron Selenide Superconductors
• Common Crystalline and Magnetic Structure of superconducting A2Fe4Se5
• Pressure-induced Superconductivity in the Iron-based Ladder Material BaFe2S3
• Iron Displacements and Magnetoelastic Coupling in the Spin-Ladder Compound BaFe2Se3
• 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
• Anisotropy in BaFe2Se3 single crystals with double chains of FeSe tetrahedra
• Spin Glass and Semiconducting Behavior in 1D BaFe2-δSe3 Crystals
• High-Tc Superconductivity near the Anion Height Instability in Fe-based Superconductors: Analysis of LaFeAsO${}_{1-x}$H${}_x$
• Sequential structural and antiferromagnetic transitions in BaFe${}_2$Se${}_3$ under pressure
• The magnetic precursor of the pressure-induced superconductivity in Fe-ladder compound
• Synthesis, crystal and magnetic structure of iron selenide BaFe2Se3 with possible superconductivity at Tc=11K
• Crystal Structure of BaFe2Se3 as a Function of Temperature and Pressure: Phase Transition Phenomena and High-Order Expansion of Landau Potential
• Polar State induced by Block-type Lattice Distortions in BaFe2Se3 with Quasi-One-Dimensional Ladder Structure
• High-pressure polymorphism of BaFe2Se3
• Pressure-Induced Metallization in Iron-Based Ladder Compounds Ba${}_{1-x}$Cs${}_x$Fe${}_2$Se${}_3$
• Dichotomy Between Orbital and Magnetic Nematic Instabilities in BaFe2S3
• The role of the nominal iron content in the structural, compositional and physical properties of BaFe${}_{2+\delta }$S${}_3$
• The Effects of Stoichiometry and Substitution in quasi-one-dimensional iron-chalcogenide BaFe${}_2$S${}_3$