Hyper-expanded interlayer separations in superconducting barium intercalates of FeSe.
Kirill V. Yusenko,Kirill V. Yusenko,Jonas Sottmann,Hermann Emerich,Wilson A. Crichton,Lorenzo Malavasi,Serena Margadonna +6 more
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TLDR
The values of Tc are primarily dependent on Ba content, and are further modulated by the interlayer spacing through facile intercalation and deintercalation of ammonia.About:
This article is published in Chemical Communications.The article was published on 2015-04-09 and is currently open access. It has received 26 citations till now. The article focuses on the topics: Intercalation (chemistry) & Barium.read more
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The intercalation chemistry of layered iron chalcogenide superconductors
TL;DR: In this paper, the authors review the intercalation chemistry of FeSe and FeS superconductors and discuss their synthesis, structure, and physical properties, including charge doping, structural distortions, and Fermi surface reconstruction.
Journal ArticleDOI
Preformed Cooper Pairs in Layered FeSe-Based Superconductors.
B. L. Kang,M. Z. Shi,S. J. Li,Hengyan Wang,Qian Zhang,D. Zhao,J. Li,D. W. Song,L. Zheng,L. P. Nie,Tao Wu,Xianhui Chen +11 more
TL;DR: It is confirmed that strong phase fluctuation is an important character in the 2D iron-basedsuperconductors as widely observed in high-T_{c} cuprate superconductors.
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Superconductivity in alkali metal intercalated iron selenides.
TL;DR: The present paper reviews scientific work concerning methods of synthesis and crystal growth, structural and superconducting properties as well as pressure investigations, and assumes the iron vacancy ordering, linked with a long-range magnetic order and a mesoscopic phase separation, to be an intrinsic property of the system.
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Chemical Intercalations in Layered Transition Metal Chalcogenides: Syntheses, Structures, and Related Properties
Zhongnan Guo,Fan Sun,Wenxia Yuan +2 more
TL;DR: In this paper, the authors introduce and summarize the latest advances in chemical intercalation and the role of these spacing layers in transition metal chalcogenides, and their relation to relevant properties.
References
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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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Superconductivity at 43 K in SmFeAsO1-xFx.
TL;DR: Chen et al. as discussed by the authors reported the discovery of bulk superconductivity in the related compound SmFeAsO1-xF x, which has a ZrCuSiAs-type structure.
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Superconductivity at 43 K in an iron-based layered compound LaO 1-x F x FeAs
TL;DR: It is reported that increasing the pressure causes a steep increase in the onset Tc of F-doped LaOFeAs, to a maximum of ∼43 K at ∼4 GPa, which is the highest Tc reported to date.
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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.
Journal ArticleDOI
Re-emerging superconductivity at 48 kelvin in iron chalcogenides
Liling Sun,Xiao-Jia Chen,Xiao-Jia Chen,Jing Guo,Peiwen Gao,Qing-Zhen Huang,Hangdong Wang,Minghu Fang,Xiaolong Chen,Genfu Chen,Qi Wu,Chao Zhang,Dachun Gu,Xiaoli Dong,Lin Wang,Ke Yang,Aiguo Li,Xi Dai,Ho-kwang Mao,Zhongxian Zhao +19 more
TL;DR: It is reported that in the superconducting iron chalcogenides, a secondsuperconducting phase suddenly re-emerges above 11.5 GPa, after the Tc drops from the first maximum of 32 K at 1 GPa.