Exploration of iron-chalcogenide superconductors

2013/07/23 by Chiheng Dong, ChiHeng Dong, Hangdong Wang +1
Business, Management and Accounting · Materials Science · Physics and Astronomy · #Antiferromagnetism #Chalcogenide #Condensed matter physics #Corporate Finance and Governance #Corporate Taxation and Avoidance #Iron-based superconductors research #Materials science #Metallurgy #Physics #Pnictogen #Superconductivity #cond-mat.supr-con

paper · pdf · doi:10.1088/1674-1056/22/8/087401

published as Chin. Phys. B, Vol. 22, No. 8 (2013) 087401 · 12 pages, 14 figures; to be published on the "TOPICAL REVIEW: Iron-based high temperature superconductors" in Chinese Physics B

arxiv created 2013/07/23 · openalex publication_date 2013/08/01 · arxiv updated 2015/06/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Iron-chalcogenide compounds with FeSe(Te, S) layers did not attract much attention until the discovery of high- T c superconductivity (SC) in the iron-pnictide compounds at the begining of 2008. Compared with FeAs-based superconductors, iron-chalcogenide superconductors have aroused enormous enthusiasm to study the relationship between SC and magnetisms with several distinct features, such as different antiferromagnetic ground states with relatively large moments in the parents, indicating possibly different superconducting mechanisms, the existence of the excess Fe atoms or Fe vacancies in the crystal lattice. Another reason is that the large single crystals are easily grown for the iron-chalcogenide compounds. This review will focus on our exploration for the iron-chalcogenide superconductors and discussion on several issues, including the crystal structure, magnetic properties, superconductivity, and phase separation. Some of them reach a consensus but some important questions still remain to be answered.

Citations

• Unconventional Superconductivity with a Sign Reversal in the Order Parameter ofLaFeAsO1−xFx
• Local spin fluctuations in iron-based superconductors:Se<mml:mprescripts/><mml:none/>77andRb<mml:mprescripts/><mml:none/>87NMR measurements on Tl0.47Rb0.34Fe1.63Se2
• Tetragonal-to-Orthorhombic Structural Phase Transition at 90 K in the SuperconductorFe1.01Se
• Band Narrowing and Mott Localization in Iron OxychalcogenidesLa2O2Fe2O(Se,S)2
• A Novel Large Moment Antiferromagnetic Order in K 0.8 Fe 1.6 Se 2 Superconductor
• Block Spin Ground State and Three-Dimensionality of(K,Tl)yFe1.6Se2
• Successive Phase Transitions under High Pressure in FeTe0.92
• First-order magnetic and structural phase transitions inFe1+ySexTe1−x
• Superconductivity at 43 K in SmFeAsO1-xF x
• The superconductivity at 18 K in LiFeAs system
• Nanoscale phase separation of antiferromagnetic order and superconductivity in K0.75Fe1.75Se2
• Density functional study of excess Fe inFe1+xTe: Magnetism and doping
• LiFeAs: An intrinsic FeAs-based superconductor withTc=18 K
• Nanoscale phase separation in the iron chalcogenide superconductor K<mml:mi/>0.8Fe<mml:mi/>1.6Se<mml:mi/>2as seen via scanning nanofocused x-ray diffraction
• Superconductivity at 22 K in Co-DopedBaFe2As2Crystals
• Observation of Fermi-surface–dependent nodeless superconducting gaps in Ba 0.6 K 0.4 Fe 2 As 2
• Spin Gap and Resonance at the Nesting Wave Vector in SuperconductingFeSe0.4Te0.6
• Thorium-doping–induced superconductivity up to 56 K in Gd 1−x Th x FeAsO
• Superconductivity at 38 K in the Iron Arsenide(Ba1−xKx)Fe2As2