activity
20082020
most citedEvolution from Itinerant Antiferromagnet to Unconventional Superconductor with Fluorine Doping in La(O_{1-x}F_{x})FeAs Revealed by ^{75}As and ^{139}La Nuclear Magnetic Resonance

298 citations · 2.4k across the 45 of their papers we have counts for

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22 papers · 1 filter

cond-mat.supr-con2008★ 23 cited

75As-NMR studies on La FeAsO1-xFx (x=0.14) under a pressure of 3GPa

K. Tatsumi, N. Fujiwara, H. Okada +4

75As-nuclear magnetic resonance (NMR) on an iron-based superconductor LaFeAsO1-xFx (x=0.14) was performed under a pressure of 3GPa. Enhancement of superconducting transition temper…

cond-mat.supr-con2008★ 44 cited

Low-temperature lattice anomaly in LaFeAsO0.93F0.07 probed by x-ray absorption spectroscopy: Evidence for strong electron-lattice interaction

C. J. Zhang, H. Oyanagi, Z. H. Sun +2

The local lattice structure in newly discovered LaFeAsO1-xFx superconductors is studied by extended x-ray absorption fine structure measurements. An anomalous upturn of the mean-sq…

cond-mat.supr-con2008★ 70 cited

Pressure-induced superconductivity in Iron pnictide compound SrFe2As2

K. Igawa, H. Okada, H. Takahashi +6

Electrical resistivity under high pressure have been measured on nominally pure SrFe2As2 up to 14 GPa. The resistivity drop appeared with increasing pressure, and we clearly observ…

cond-mat.supr-con2008★ 177 cited

Superconductivity under high pressure in LaFeAsO

H. Okada, K. Igawa, H. Takahashi +5

Electrical resistivity measurements under high pressures up to 29 GPa were performed for oxypnictide compound LaFeAsO. We found a pressure-induced superconductivity in LaFeAsO. The…

cond-mat.supr-con2008★ 27 cited

Systematic ^{75}As NMR study of the dependence of low-lying excitations on F doping in the iron oxypnictide LaFeAs(O_{1-x}F_{x})

Yusuke Nakai, Shunsaku Kitagawa, Kenji Ishida +3

We report systematic As NMR studies on LaFeAs(OF) (). At near the phase boundary, from resistivity, spin-lattice relaxation rate $1/T_1…

cond-mat.supr-con2008★ 31 cited

Doping dependence of upper critical field and Hall resistivity in LaFeAsO1-xFx

Y. Kohama, Y. Kamihara, S. A. Baily +7

The electrical resistivity (Rxx) and Hall resistivity (Rxy) of LaFeAsO1-xFx have been measured over a wide fluorine doping range 0 =< x =< 0.14 using 60 T pulsed magnets. While the…