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Superconductivity above 50K in LnFeAsO1-y (Ln= Nd, Sm, Gd, Tb and Dy) Synthesized by High-pressure Technique
Kiichi Miyazawa, Kunihiro Kihou, Parasharam M. Shirage +4
We have succeeded in synthesizing single-phase polycrystalline samples of oxygen-deficient oxypnictide superconductors, LnFeAsO1-y (Ln: lanthanide elements) with Ln=La, Ce, Pr, Nd,…
Universal versus Material-Dependent Two-Gap Behaviors in the High-Tc Cuprates: Angle-Resolved Photoemission Study of La2-xSrxCuO4
T. Yoshida, M. Hashimoto, S. Ideta +11
We have investigated the doping and temperature dependences of the pseudogap/superconducting gap in the single-layer cuprate LaSrCuO by angle-resolved photoemission…
Lower Critical Fields of Superconducting PrFeAsO Single Crystals
R. Okazaki, M. Konczykowski, C. J. van der Beek +12
We have studied the lower critical fields H_{c1} of superconducting iron oxipnictide PrFeAsO_{1-y} single crystals for H parallel and perpendicular to the ab-planes. Measurements o…
Evidence of spin density wave in LaFeAsO, the parent material of the new Fe-based oxypnictide superconductors
Motoyuki Ishikado, Ryoichi Kajimoto, Shin-ichi Shamoto +11
The Fe-based Oxypnicide superconductors have generated a huge amount of interest; they are a high temperature superconductor, with a Tc of 55K, but do not have the two dimensional…
Coexistence of Antiferromagnetism and Superconductivity in PrFeAsO
D. Kubota, T. Ishida, M. Ishikado +4
A high-quality PrFeAsO single crystal ( K) has been investigated by the magnetic torque. Antiferromagnetism of the Pr ions was found to coexist with su…
Appearance of Universal Metallic Dispersion in a Doped Mott Insulator
S. Sahrakorpi, R. S. Markiewicz, Hsin Lin +16
We have investigated the dispersion renormalization in LaSrCuO (LSCO) over the wide doping range of , for binding energies extending to seve…