75As-NMR studies on La FeAsO1-xFx (x=0.14) under a pressure of 3GPa (2008)
Tatsumi, K., Fujiwara, N., Okada, H., Takahashi, H., Kamihara, Y., Hirano, M., ...
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 temperature Tc was...
Pressure-induced superconductivity in Iron pnictide compound SrFe2As2 (2008)
Igawa, K., Okada, H., Takahashi, H., Matsuishi, S., Kamihara, Y., Hirano, M., ...
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 observed zero...
Superconductivity under high pressure in LaFeAsO (2008)
Okada, H., Igawa, K., Takahashi, H., Kamihara, Y., Hirano, M., Hosono, H., ...
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 maximum value of...
Pressure Study of Superconducting Oxypnictide LaFePO (2008)
Igawa, K., Okada, H., Arii, K., Takahashi, H., Kamihara, Y., Hirano, M., ...
Electrical resistivity and magnetic susceptibility measurements under high pressure were performed on an iron-based superconductor LaFePO. A steep increase in superconducting transition temperature...
Kohama, Y., Kamihara, Y., Baily, S. A., Civale, L., Riggs, S. C., Balakirev, F. F., ...
The electrical resistivity (rxx) and Hall resistivity (rxy) have been measured over wide composition range using 60 T pulsed magnets. While the superconducting phase diagram (Tc, x) displays the...
Higashitaniguchi, S., Seto, M., Kitao, S., Kobayashi, Y., Saito, M., Masuda, R., ...
We have measured element-specific Fe-phonon densities of states (Fe-PDOS) of LaFeAsO_{1-x}F_{x} (x = 0, 0.11) and La_{1-x}Ca_{x}FePO (x = 0.13) by using nuclear resonant inelastic scattering of...
Takeshita, S., Kadono, R., Hiraishi, M., Miyazaki, M., Koda, A., Kamihara, Y., ...
Recent discovery of oxypnictide superconductor LaFeAs(O,F) (LFAO-F) with the critical temperature (Tc) of 26 K and succeeding revelation of much increased Tc upon substitution of La for other rare...
Hall coefficient and Hc2 in underdoped LaFeAsO0.95F0.05 (2008)
Kohama, Y., Kamihara, Y., Riggs, S., Balakirev, F. F., Atake, T., Jaime, M., ...
The electrical resistivity and Hall coefficient of LaFeAsO0.95F0.05 polycrystalline samples were measured in pulsed magnetic fields up to m0H = 60 T from room temperature to 1.5 K. The resistance of...
Superconducting Gap and Pseudogap in Iron-Based Layered Superconductor La(O$_{1-x}$F$_x$)FeAs (2008)
Sato, T., Souma, S., Nakayama, K., Terashima, K., Sugawara, K., Takahashi, T., ...
We report high-resolution photoemission spectroscopy of newly-discovered iron-based layered superconductor La(O$_{0.93}$F$_{0.07}$)FeAs (Tc = 24 K). We found that the superconducting gap shows a...
Evidence for Pseudogap Evolutions in High-Tc Iron Oxypnictides (2008)
Ishida, Y., Shimojima, T., Ishizaka, K., Kiss, T., Okawa, M., Togashi, T., ...
We have performed a temperature-dependent angle-integrated laser photoemission study of iron oxypnictide superconductors LaOFeAs:F and LaOFeP:F exhibiting critical transition temperatures (Tc's) of...
Kitao, S., Kobayashi, Y., Higashitaniguchi, S., Saito, M., Kamihara, Y., Hirano, M., ...
The 57Fe M\"ossbauer spectroscopy was applied to an iron-based layered superconductor LaO0.89F0.11FeAs with a transition temperature of 26 K and its parent material LaOFeAs. Throughout the...