activity
20082011
most cited75As NQR/NMR Studies on Oxygen-deficient Iron-based Oxypnictide Superconductors LaFeAsO_{1-y} (y=0,0.25,0.4) and NdFeAsO_{0.6}

123 citations · 857 across the 18 of their papers we have counts for

collaborators

18 papers

cond-mat.supr-con2011

Possibility of Horizontal Line Node in KFeAs Probed by Muon Spin Rotation

Kazuki Ohishi, Yasuyuki Ishii, Hedeto Fukazawa +10

The anisotropy and temperature dependence of the magnetic field penetration depth in the iron-based superconductor KFeAs have been measured down to 20 mK by means of muon s…

cond-mat.supr-con2010★ 10 cited

Synthesis of ErFeAsO-based superconductors by hydrogen doping method

Parasharam M. Shirage, Kiichi Miyazawa, Kunihiro Kihou +6

Here we demonstrate the technique to stabilize the ErFeAsO-based superconductor with the smallest lattice constants in LnFeAsO1-y (Ln = lanthanide) series using hydrogen doping met…

cond-mat.supr-con2010★ 40 cited

Absence of an appreciable iron isotope effect on the transition temperature of the optimally doped SmFeAsO_{1-y} superconductor

Parasharam M. Shirage, Kiichi Miyazawa, Kunihiro Kihou +5

We report the iron (Fe) isotope effect on the transition temperature (Tc) in the oxygen-deficient SmFeAsO_{1-y}, a 50 K-class Fe-based superconductor. For the optimally-doped sampl…

cond-mat.supr-con2010★ 19 cited

Origin of Tc Enhancement Induced by Doping Yttrium and Hydrogen into LaFeAsO-based Superconductors: 57Fe, 75As, 139La, and 1H-NMR Studies

H. Yamashita, H. Mukuda, M. Yashima +6

We report our extensive 57Fe-, 75As-, 139La-, and 1H-NMR studies of La_{0.8}Y_{0.2}FeAsO_{1-y} (La_{0.8}Y_{0.2}1111) and LaFeAsO_{1-y}H_{x}(La1111H), where doping yttrium (Y) and h…

cond-mat.supr-con2010★ 2 cited

No anomalous spin fluctuation in optimally doped and overdoped iron-based oxypnictide superconductors LaFeAsOF probed by muon spin relaxation

Kazuki Ohishi, Yasuyuki Ishii, Kiichi Miyazawa +7

Zero field and longitudinal field muon spin relaxation measurements have been performed in optimally doped and overdoped superconductors LaFeAsOF in order to investigat…

cond-mat.supr-con2010★ 24 cited

Strong carrier-scattering in iron-pnictide superconductors with highest Tc obtained from charge transport experiments

S. Ishida, M. Nakajima, Y. Tomioka +10

Characteristic normal-state charge transport is found in the oxygen-deficient iron-arsenides LnFeAsO1-y (Ln: La and Nd) with the highest Tc's among known Fe-based superconductors.…