Observation of superconductivity at 30∼46K in AxFe2Se2 (A = Li, Na, Ba, Sr, Ca, Yb, and Eu)
Tianping Ying,Xuliang Chen,Guohong Wang,Shujing Jin,Tian-Yu Zhou,Xiaofang Lai,H.F. Zhang,Wenfei Wang +7 more
TLDR
It is demonstrated that a series of superconductors with enhanced Tc = 30∼46 K can be obtained by intercalating metals, Li, Na, Ba, Sr, Ca, Yb, and Eu in between FeSe layers by the ammonothermal method at room temperature, providing a new starting point for studying the properties of thesesuperconductors and an effective synthetic route for the exploration of new superconductor exploration.Abstract:
Observation of superconductivity at 30 ∼ 46K in A x Fe 2 Se 2 (A = Li, Na, Ba, Sr, Ca, Yb, and Eu)read more
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Enhancement of the superconducting transition temperature of FeSe by intercalation of a molecular spacer layer
Maththew Burrard-Lucas,David G. Free,Stefan J. Sedlmaier,Jack D. Wright,Simon J. Cassidy,Yoshiaki Hara,Alex J. Corkett,Tom Lancaster,Peter J. Baker,Stephen J. Blundell,Simon J. Clarke +10 more
TL;DR: In this paper, the composition of the spacer layers present in iron-based superconductors is altered to increase the temperature below which they superconduct, and intercalating FeSe with molecular spacer layer is also shown to enhance the superconducting transition temperature.
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Exploration of new superconductors and functional materials, and fabrication of superconducting tapes and wires of iron pnictides
Hideo Hosono,Keiichi Tanabe,Eiji Takayama-Muromachi,Hiroshi Kageyama,Shoji Yamanaka,Hiroaki Kumakura,Minoru Nohara,Hidenori Hiramatsu,Satoru Fujitsu +8 more
TL;DR: This review summarizes the major achievements of the project in newly found superconducting materials, and the fabrication wires and tapes of iron-based superconductors; it incorporates a list of ∼700 unsuccessful materials examined for superconductivity in the project.
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Coexistence of superconductivity and antiferromagnetism in (Li0.8Fe0.2)OHFeSe.
X. F. Lu,Naizhou Wang,Hui Wu,Y. P. Wu,D. Zhao,X. Z. Zeng,Xigang Luo,Tiantian Wu,Wei Bao,G. H. Zhang,Fuqiang Huang,Qingzhen Huang,Xianhui Chen +12 more
TL;DR: The synthesis of an air-stable material, (Li0.8Fe0.2)OHFeSe, which remains superconducting at temperatures up to ~40 K, by means of a novel hydrothermal method and antiferromagnetic order is shown to coexist with superconductivity.
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Colloquium: The unexpected properties of alkali metal iron selenide superconductors
TL;DR: In this article, the authors present the current status of this exciting area of research, with the potential to alter conceptually our understanding of the iron-based superconductors, covering both experimental and theoretical investigations.
Journal ArticleDOI
Angle-Resolved Photoemission Studies of Quantum Materials
TL;DR: Angle-resolved photoemission spectroscopy (ARPES) has emerged as a leading experimental probe for studying the complex phenomena in quantum materials, a subject of increasing importance as mentioned in this paper.
References
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Recent advances in magnetic structure determination by neutron powder diffraction
TL;DR: In this article, the main formulas governing the analysis of the Bragg magnetic scattering are summarized and shortly discussed and the method of profile fitting without a structural model to get precise integrated intensities and refine the propagation vector(s) of the magnetic structure is discussed.
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Iron-Based Layered Superconductor La[O1-xFx]FeAs (x = 0.05−0.12) with Tc = 26 K
TL;DR: It is reported that a layered iron-based compound LaOFeAs undergoes superconducting transition under doping with F- ions at the O2- site and exhibits a trapezoid shape dependence on the F- content.
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Superconductivity in the PbO-type structure α-FeSe
F. C. Hsu,J. Y. Luo,Kuo-Wei Yeh,Ta-Kun Chen,T. W. Huang,Phillip M. Wu,Yong-Chi Lee,Yi-Lin Huang,Yan-Yi Chu,Der-Chung Yan,Maw-Kuen Wu +10 more
TL;DR: The observation of superconductivity with zero-resistance transition temperature at 8 K in the PbO-type α-FeSe compound is reported, indicating that this compound has the same, perhaps simpler, planar crystal sublattice as the layered oxypnictides.
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Superconductivity at 55 K in Iron-Based F-Doped Layered Quaternary Compound Sm[O1-xFx] FeAs
Ren Zhi-An,Lu Wei,Yang Jie,Yi Wei,Shen Xiao-Li,Zheng-Cai,Che Guang-Can,Dong Xiao-Li,Sun Li-Ling,Zhou Fang,Zhao Zhong-Xian +10 more
TL;DR: In this article, the superconductivity of iron-based oxyarsenide Sm[O1-xFx]FeAs was reported, with the onset resistivity transition temperature at 55.0K and Meissner transition at 54.6 K. This compound has the same crystal structure as LaOFeAs with shrunk crystal lattices.
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Iron-Based Layered Superconductor: LaOFeP
Yoichi Kamihara,Hidenori Hiramatsu,Masahiro Hirano,Ryuto Kawamura,Hiroshi Yanagi,Toshio Kamiya,Hideo Hosono +6 more
TL;DR: Magnetic and electrical resistivity measurements verify the occurrence of the superconducting transition at approximately 4 K in an iron-based layered oxy-pnictide LaOFeP.