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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Temperature dependent local atomic displacements in ammonia intercalated iron selenide superconductor
Eugenio Paris,Laura Simonelli,Takanori Wakita,Carlo Marini,Ji Hyun Lee,Wojciech Olszewski,Kensei Terashima,Takeshi Kakuto,Naoki Nishimoto,Takumi Kimura,Kazutaka Kudo,Takashi Kambe,Minoru Nohara,Takayoshi Yokoya,Naurang L. Saini +14 more
TL;DR: An anomalous change in the atomic correlations across Tc is revealed, appearing as a clear decrease in the MSRD, indicating hardening of the local lattice mode.
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New Alkali-Metal- and 2-Phenethylamine-Intercalated Superconductors $A_x$(C$_8$H$_{11}$N)$_y$Fe$_{1-z}$Se ($A$ = Li, Na) with the Largest Interlayer Spacings and $T_\mathrm{c}$ $\sim$ 40 K
TL;DR: In this article, the authors showed that the relationship between the interlayer spacings of FeSe-based intercalation superconductors is not domic but $T_\mathrm{c}$ is saturated at ~ 45 K, which is comparable to the values of single-layer FeSe films, for $d$ $\geq$ 9 A.
Journal ArticleDOI
Ab-initio perspective on structural and electronic properties of iron-based superconductors
TL;DR: The discovery of iron pnictides and chalcogenides as a new class of unconventional superconductors in 2008 has generated an enourmous amount of experimental and theoretical work that identifies these materials as correlated metals with multiorbital physics, where magnetism, nematicity and superconductivity are competing phases that appear as a function of pressure and doping as discussed by the authors.
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A new intercalated iron sulfide (C2H8N2)0.4Fe2S2 from solvothermal route: Synthesis, structure and tunable magnetism
TL;DR: In this article, a new intercalated FeS compound (C2H8N2)0.4Fe2S2 was synthesized via the solvothermal route and showed the micron-sized plate shape.
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Superconductivity and Intercalation Statein the Lithium-Hexamethylenediamine-Intercalated Superconductor Li$_x$(C$_6$H$_{16}$N$_2$)$_y$Fe$_{2-z}$Se$_2$: Dependence on the Intercalation Temperature and Lithium Content
TL;DR: In this paper, the superconductivity and intercalation state of the lithium-and hexamethylenediamine (HMDA)-intercalated superconductor Li and HMDA have been investigated from powder x-ray diffraction, thermogravimetric and magnetic susceptibility measurements.
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.
Journal ArticleDOI
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.
Journal ArticleDOI
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.