101 citations · 780 across the 36 of their papers we have counts for
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Anisotropic Behavior of Knight Shift in Superconducting State of Na_xCoO_2yH_2O
Y. Ihara, K. Ishida, H. Takeya +8
The Co Knight shift was measured in an aligned powder sample of Na_xCoO_2yH_2O, which shows superconductivity at T_c \sim 4.6 K. The Knight-shift components parallel (K_c) and perp…
Valence and Na content dependences of superconductivity in NaxCoO2.yH2O
H. Sakurai, N. Tsujii, O. Suzuki +5
Various samples of sodium cobalt oxyhydrate with relatively large amounts of Na ions were synthesized by a modified soft-chemical process in which a NaOH aqueous solution was…
Superconducting phase diagram of NaxCoO2.yH2O
H. Sakurai, K. Takada, T. Sasaki +1
We synthesized Nax(H3O)zCoO2yH2O samples with various Na/H3O ratios but with the constant Co valence of s = +3.40, and measured their magnetic properties to draw phase diagrams of…
Roles of two successive phase transitions in new spin-Peierls system TiOBr
T. Sasaki, M. Mizumaki, T. Nagai +5
In this sturdy, we determine the roles of two successive phase transitions in the new spin-Peierls system TiOBr by electron and synchrotron X-ray diffraction analyses. Results show…
Na NMR Study of Layered Superconductor
H. Ohta, C. Michioka, Y. Itoh +5
We measured Na-NMR spectra and nuclear spin-lattice relaxation rates of superconducting and non-superconducting bilayer hydrate (x ~ 0.3, y…
Phase separation in the vicinity of the surface of -(BEDT-TTF)Cu[N(CN)]Br by fast cooling
N. Yoneyama, T. Sasaki, N. Kobayashi +2
Partial suppression of superconductivity by fast cooling has been observed in the organic superconductor -(BEDT-TTF)Cu[N(CN)]Br by two means: a marked sample size effect…