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59Co-NMR Knight Shift of Aligned Crystals and Polycrystalline Samples of Superconducting Na0.3CoO2.1.3H2O
Yoshiaki Kobayashi, Hidekazu Watanabe, Mai Yokoi +3
Temperature (T) dependence of 59Co-NMR Knight shifts K of Na0.3CoO2.1.3H2O has been studied, where samples of randomly oriented powder and aligned crystals have been used for the a…
Pump process of the rotatory molecular motor and its energy efficiency
Hiroshi Miki, Masatoshi Sato, Mahito Kohmoto
The pump process of the ratchet model inspired by the rotatory motor of ATP synthase is investigated. In this model there are two kinds of characteristic time. One is dynamic…
On the Magnetic Excitation Spectra of High Tc Cu Oxides up to the Energies far above the Resonance Energy
Satoshi Iikubo, Masafumi Ito, Akito Kobayashi +2
Magnetic excitation spectra c"(q,w) of YBa2Cu3Oy and La214 systems have been studied. For La1.88Sr0.12CuO4, c"(q,w) have been measured up to ~30 meV and existing data have been ana…
Transport and Magnetic Studies on the Spin State Transition of Pr1-xCaxCoO3 up to High Pressure
Toshiaki Fujita, Takeshi Miyashita, Yukio Yasui +11
Transport and magnetic measurements and structural and NMR studies have been carried out on (Pr1-yR'y)1-xAxCoO3 {R'=(rare earth elements and Y); A=(Ca, Ba and Sr)} at ambient press…