Inter-Layer Screening Length to Electric Field in Thin Graphite Film (2008)
Miyazaki, Hisao, Odaka, Shunsuke, Sato, Takashi, Tanaka, Sho, Goto, Hidenori, Kanda, Akinobu, ...
Electric conduction in thin graphite film was tuned by two gate electrodes to clarify how the gate electric field induces electric carriers in thin graphite. The graphite was sandwiched between two...
Critical exponents for the metal-insulator transition of ^{70}Ge:Ga in magnetic fields (2002)
Watanabe, Michio, Itoh, Kohei M., Morishita, Masashi, Ootuka, Youiti, Haller, Eugene E.
We have measured the electrical conductivity of nominally uncompensated ^{70}Ge:Ga samples in magnetic fields up to B=8 T at low temperatures (T=0.05-0.5 K) in order to investigate the...
Orbital-Degenerate Paramagnetic Metal Sr2MoO4: An Electronic Analogue to Sr2RuO4 (2000)
Ikeda, Shin-Ichi, Shirakawa, Naoki, Bando, Hiroshi, Ootuka, Youiti
We present the first systematic study on polycrystalline Sr2MoO4 as an electronic analogue to the spin-triplet superconductor Sr2RuO4. The Pauli paramagnetic susceptibility and metallic behaviors of...
Magetoresistance of RuO_2-based resistance thermometers below 0.3 K (2000)
Watanabe, Michio, Morishita, Masashi, Ootuka, Youiti
We have determined the magnetoresistance of RuO_2-based resistors (Scientific Instruments RO-600) between 0.05 K and 0.3 K in magnetic fields up to 8 T. The magnetoresistance is negative around 0.5 T...
Watanabe, Michio, Itoh, Kohei M., Ootuka, Youiti, Haller, Eugene E.
We have determined the localization length \xi and the impurity dielectric susceptibility \chi_{\rm imp} as a function of Ga acceptor concentrations (N) in nominally uncompensated ^{70}Ge:Ga just...
Watanabe, Michio, Itoh, Kohei M., Ootuka, Youiti, Haller, Eugene E.
We have investigated the temperature dependence of the electrical conductivity sigma(N,B,T) of nominally uncompensated, neutron-transmutation-doped ^{70}Ge:Ga samples in magnetic fields up to B=8 T...
Watanabe, Michio, Ootuka, Youiti, Itoh, Kohei M., Haller, Eugene E.
We report the low temperature carrier transport properties of a series of nominally uncompensated neutron-transmutation doped (NTD) ^{70} Ge:Ga samples very close to the critical concentration N_c...
Spin Polarization and Magneto-Coulomb Oscillations in Ferromagnetic Single Electron Devices (1998)
Ono, Keiji, Shimada, Hiroshi, Ootuka, Youiti
The magneto-Coulomb oscillation, the single electron repopulation induced by external magnetic field, observed in a ferromagnetic single electron transistor is further examined in various...
Magneto-Coulomb Oscillation in Ferromagnetic Single Electron Transistors (1997)
Shimada, Hiroshi, Ono, Keiji, Ootuka, Youiti
The mechanism of the magneto-Coulomb oscillation in ferromagnetic single electron transistors (SET's) is theoretically considered. Variations in the chemical potentials of the conduction electrons in...
First Results of Tokyo Dark Matter Search with a Lithium Fluoride Bolometer (1997)
Ootani, Wataru, Minowa, Makoto, Watanabe, Takayuki, Ito, Yutaka, Kishimoto, Yasuhiro, Miuchi, Kentaro, ...
The First results of the Tokyo dark matter search programme using a 21-g lithium fluoride bolometer are presented. The background spectrum was measured in the surface laboratory. We derive an...
Ootani, Wataru, Ito, Yutaka, Nishigaki, Keiji, Kishimoto, Yasuhiro, Minowa, Makoto, Ootuka, Youiti
Sensitive n-type and p-type germanium thermistors were fabricated by the melt doping technique and by the neutron transmutation doping (NTD) technique, respectively, aiming at a use for the cryogenic...