60 citations · 282 across the 9 of their papers we have counts for
9 papers
Quantum Phase transition under pressure in a heavily hydrogen-doped iron-based superconductor LaFeAsO
Naoki Fujiwara, Naoto Kawaguchi, Soushi IImura +2
Hydrogen (H)-doped LaFeAsO is a prototypical iron-based superconductor. However, its phase diagram extends beyond the standard framework, where a superconducting (SC) phase follows…
Experimental evidence of enhancement without the influence of spin fluctuations: NMR study on LaFeAsO_{1-x}H_x under a pressure of 3.0 GPa
N. Kawaguchi, N. Fujiwara, S. Iimura +2
The electron-doped high-transition-temperature (T_c) iron-based pnictide superconductor LaFeAsO_{1-x}H_x has a unique phase diagram: superconducting (SC) double domes are sandwiche…
Quantum critical behavior in heavily doped LaFeAsOH pnictide superconductors analyzed using nuclear magnetic resonance
R. Sakurai, N. Fujiwara, N. Kawaguchi +5
We studied the quantum critical behavior of the second antiferromagnetic (AF) phase in the heavily electron-doped high- pnictide, LaFeAsOH by using As and $…
Superconductivity Above 40 K Observed in a New Iron Arsenide Oxide (Fe2As2)(Ca4(Mg,Ti)3Oy)
Hiraku Ogino, Yasuaki Shimizu, Koichi Ushiyama +3
A new layered iron arsenide oxide (Fe2As2)(Ca4(Mg,Ti)3Oy) was discovered. Its crystal structure is tetragonal with a space group of I4/mmm consisted of the anti-fluorite type FeAs…
New Iron Arsenide Oxides (Fe2As2)(Sr4(Sc,Ti)3O8), (Fe2As2)(Ba4Sc3O7.5), and (Fe2As2)(Ba3Sc2O5)
Naoto Kawaguchi, Hiraku Ogino, Yasuaki Shimizu +2
We synthesized new layered iron arsenide oxides (Fe2As2)(Sr4(Sc,Ti)3O8),(Fe2As2)(Ba4Sc3O7.5), and (Fe2As2)(Ba3Sc2O5). The crystal structures of these compounds are tetragonal with…
Structural Features of Layered Iron Pnictide Oxides (Fe2As2)(Sr4M2O6)
H. Ogino, S. Sato, Y. Matsumura +6
Structural features of newly found perovskite-based iron pnictide oxide system have been systematically studied. Compared to REFePnO system, perovskite-based system tend to have lo…
A New Iron Pnictide Oxide (Fe2As2)(Ca5(Mg,Ti)4Oy) and a New Phase in Fe-As-Ca-Mg-Ti-O system
Hiraku Ogino, Yasuaki Shimizu, Naoto Kawaguchi +4
A new layered iron arsenide oxide (Fe2As2)(Ca5(Mg,Ti)4Oy) and its structural derivative were found in the Fe-As-Ca-Mg-Ti-O system. The crystal structure of (Fe2As2)(Ca5(Mg,Ti)4Oy)…
Superconductivity in New Iron Pnictide Oxide (Fe2As2)(Sr4(Mg,Ti)2O6)
Shinya Sato, Hiraku Ogino, Naoto Kawaguchi +5
We have discovered a new iron pnictide oxide superconductor (Fe2As2)(Sr4(Mg,Ti)2O6). This material is isostructual with (Fe2As2)(Sr4M2O6) (M = Sc, Cr, V), which were found in previ…
Superconductivity at 39 K in New Iron Pnictide Oxide (Fe2As2)(Sr4(Mg,Ti)2O6)
Shinya Sato, Hiraku Ogino, Naoto Kawaguchi +3
We have discovered a new iron pnictide oxide superconductor (Fe2As2)(Sr4(Mg,Ti)2O6). This material is isostructual with (Fe2As2)(Sr4M2O6) (M = Sc, Cr), which was found in our previ…