47 citations · 47 across the 1 of their papers we have counts for
5 papers
Metal-insulator Transition in a Pyrochlore-type Ruthenium oxide, Hg2Ru2O7
Ayako Yamamoto, Peter A. Sharma, Yoshihiko Okamoto +5
A new pyrochlore ruthenium oxide, Hg2Ru2O7 was synthesized under a high pressure of 6 GPa. In contrast to the extensively studied Ru4+ oxides, this compound possesses a novel Ru5+…
Inter-Spin State Transition associated with magnetization jump in Y0.33Sr0.67CoO3
Yufeng Zhang, Ayako Yamamoto, Mitsuru Izumi
This paper has been withdrawn by the authors due to lack of significant consideration.
Effects of carbon incorporation on doping state of YBa2Cu3Oy
A. Yamamoto, K. Hirose, Y. Itoh +2
Effects of carbon incorporation on the doping state of YBa2Cu3Oy (Y-123) were investigated. Quantitative carbon analysis revealed that carbon could be introduced into Y-123 from bo…
Carbon-substituted MgB2 single crystals
Sergey Lee, Takahiko Masui, Ayako Yamamoto +2
Carbon-substituted MgB2 single crystals, Mg(B_1-xC_x)_2 of 0.3-1.0 mm size were grown for x=0.02-0.15 by a high-pressure technique. The doping dependence of lattice constants studi…
Determination of the Fermi Surface of MgB by the de Haas-van Alphen effect
A. Carrington, P. J. Meeson, J. R. Cooper +8
We report measurements of the de Haas-van Alphen effect for single crystals of MgB, in magnetic fields up to 32 Tesla. In contrast to our earlier work, dHvA orbits from all fou…