298 citations · 2.8k across the 38 of their papers we have counts for
38 papers
Enhanced anisotropic spin fluctuations below tetragonal-to-orthorhombic transition in LaFeAs(O_{1-x}F_x) probed by ^{75}As and ^{139}La NMR
Yusuke Nakai, Shunsaku Kitagawa, Tetsuya Iye +4
As and La NMR results of LaFeAs(OF) (=0, 0.025, and 0.04) were reported. Upon F-doping, the tetragonal-to-orthorhombic structural phase transition tem…
Metamagnetic Behavior and Kondo Breakdown in Heavy-Fermion CeFePO
S. Kitagawa, H. Ikeda, Y. Nakai +5
We report that nonmagnetic heavy-fermion (HF) iron oxypnictide CeFePO with two-dimensional XY-type anisotropy shows a metamagnetic behavior at the metamagnetic field H_M \simeq 4 T…
Coexistence of light and heavy carriers associated with superconductivity and anti-ferromagnetism in CeNi0.8Bi2 with a Bi square net
Hiroshi Mizoguchi, Satoru Matsuishi, Masahiro Hirano +4
We found that the ZrCuSiAs-type crystal CeNi0.8Bi2 with a layered structure composed of alternate stacking of [CeNixBi(1)]δ+ and Bi(2)δ- exhibits a superconductive transition at ~4…
Stripe antiferromagnetic correlations in LaFeAsO1-xFx probed by 75As NMR
Shunsaku Kitagawa, Yusuke Nakai, Tetsuya Iye +4
The anisotropy of the nuclear spin-lattice relaxation rate of As was investigated in the iron-based superconductor LaFeAs(OF) ( and 0…
Anomalous He-Gas High-Pressure Studies on Superconducting LaO1-xFxFeAs
W. Bi, H. B. Banks, J. S. Schilling +5
AC susceptibility measurements have been carried out on superconducting LaO1-xFxFeAs for x=0.07 and 0.14 under He-gas pressures to about 0.8 GPa. Not only do the measured values of…
Two-Dimensional Spin Dynamics in the Itinerant Ferromagnet LaCoPO Revealed by Magnetization and P-NMR Measurements
Hitoshi Sugawara, Kenji Ishida, Yusuke Nakai +5
We have performed magnetization and P-NMR measurements on the itinerant ferromagnet LaCoPO (Curie temperature K) with a layered structure in order to…