7 papers · 1 filter
Switching current distributions and subgap structures of underdoped (Hg,Re)Ba2Ca2Cu3O8+d intrinsic Josephson junctions
S. Ueda, T. Yamaguchi, Y. Kubo +4
We have investigated the intrinsic Josephson properties in slightly underdoped (Hg,Re)Ba2Ca2Cu3Oy [Hg(Re)1223] intrinsic Josephson junctions (IJJs) with a dimension of 1.0x1.5x0.11…
New Series of Nickel-Based Pnictide Oxide Superconductors (Ni2Pn2)(Sr4Sc2O6) (Pn = P, As)
Yutaka Matsumura, Hiraku Ogino, Shigeru Horii +3
We have discovered new nickel-based pnictide oxide superconductors, (Ni2Pn2)(Sr4Sc2O6) (Pn = P, As). These compounds have a tetragonal unit cell with a space group of P4/nmm and th…
New iron-based arsenide oxides (Fe2As2)(Sr4M2O6)(M = Sc, Cr)
Hiraku Ogino, Yukari Katsura, Shigeru Horii +2
We have discovered new layered oxyarsenides (Fe2As2)(Sr4M2O6) (M = Sc, Cr: M-22426). These materials are isostructural with (Fe2P2)(Sr4Sc2O6), which was found in our previous study…
Superconductivity at 17 K in (Fe2P2)(Sr4Sc2O6): a new superconducting layered pnictide oxide with a thick perovskite oxide layer
H. Ogino, Y. Matsumura, Y. Katsura +4
A new layered oxypnictide (Fe2P2)(Sr4Sc2O6) have been synthesized by solid-state reaction. This material has an alternating layer stacking structure of anti-fluorite Fe2P2 and pero…
Universal relationship between crystallinity and irreversibility field of MgB2
A. Yamamoto, J. Shimoyama, S. Ueda +4
The relationship between irreversibility field, Hirr, and crystallinity of MgB2 bulks including carbon substituted samples was studied. The Hirr was found to increase with an incre…
Superconducting order parameter in heavily overdoped : a global quantitative analysis
R. H. He, D. L. Feng, H. Eisaki +3
A systematic analysis of the complex lineshape at of heavily overdoped BiSrCaCuO is presented. We show that a coherent component in the quasi-particle e…