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Superconductivity in alkali-earth metals doped phenanthrene
X. F. Wang, Y. J. Yan, Z. Gui +4
We discover superconductivity in alkali-earth metals doped phenanthrene. The superconducting critical temperatures \emph{T} are 5.6 K and 5.4 K for Srphenanthrene and B…
Strong coupling of Sm and Fe magnetism in SmFeAsO as revealed by magnetic x-ray scattering
S. Nandi, Y. Su, Y. Xiao +17
The magnetic structures adopted by the Fe and Sm sublattices in SmFeAsO have been investigated using element specific x-ray resonant and non-resonant magnetic scattering techniques…
Electronic identification of the actual parental phase of KxFe2-ySe2 superconductor and its intrinsic mesoscopic phase separation
F. Chen, M. Xu, Q. Q. Ge +14
While the parent compounds of the cuprate high temperature superconductors (high-Tc's) are Mott insulators, the iron-pnictide high-Tc's are in the vicinity of a metallic spin densi…
Electronic and magnetic phase diagram in KFeSe superconductors
Y. J. Yan, M. Zhang, A. F. Wang +7
The correlation and competition between antiferromagnetism and superconductivity are one of the most fundamental issues in all of high temperature superconductors. The superconduct…
On the Structure of Vacancy Ordered Superconducting Alkali Metal Iron Selenide
P. Zavalij, Wei Bao, X. F. Wang +9
With single crystal X-ray diffraction studies, we compare the structures of three sample showing optimal superconductivity, K0.774(4)Fe1.613(2)Se2, K0.738(6)Fe1.631(3)Se2 and Cs0.7…
Common Crystalline and Magnetic Structure of superconducting A2Fe4Se5
F. Ye, S. Chi, Wei Bao +6
Single crystal neutron diffraction study has been performed on new superconductor A2Fe4Se5, where A = Cs, K, (Tl,Rb) and (Tl,K), and the same Fe vacancy ordered crystal structure a…