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Evidence for negative thermal expansion in the superconducting precursor phase SmFeAsO
H. D. Zhou, P. M. Sarte, B. S. Conner +8
The fluorine-doped rare-earth iron oxypnictide series SmFeAsOF (0 0.10) was investigated with high resolution powder x-ray scattering. In agreement with p…
Superconductivity induced by oxygen deficiency in Sr-doped LaOFeAs
G. Wu, H. Chen, Y. L. Xie +7
We synthesized Sr-doped sample with single phase, and systematically studied the effect of oxygen deficiency in the Sr-doped LaOFeAs system. It is found t…
Transport properties and superconductivity in (M=La and K) with double FeAs layers
G. Wu, R. H. Liu, H. Chen +7
We synthesized the samples (M=La and K) with -type structure. These samples were systematically characterized by resistivity, thermoelectic power…
Phase Diagram and Quantum Critical Point in Newly Discovered Superconductors: SmO_{1-x}F_xFeAs
R. H. Liu, G. Wu, T. Wu +11
The magnetic fluctuations associated with a quantum critical point (QCP) are widely believed to cause the non-Fermi liquid behaviors and unconventional superconductivities, for exa…
Superconductivity at 43 K in Samarium-arsenide Oxides
X. H. Chen, T. Wu, G. Wu +3
Since the discovery of high-transition temperature () superconductivity in layered copper oxides, extensive efforts have been devoted to explore the higher superconducti…
Giant Anisotropy of Magnetoresistance and "Spin Valve" effect in Antiferromagnetic
T. Wu, C. H. Wang, G. Wu +4
We have studied anisotropic magnetoresistance (MR) and magnetization with rotating magnetic field (B) within plane in lightly doped AF . \emph{A giant…