Tsutomu Kanno
Panasonic
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Publication
Featured researches published by Tsutomu Kanno.
Physical Review B | 2004
A. Odagawa; Hiroshi Sato; Isao H. Inoue; Hiroshi Akoh; Masashi Kawasaki; Yoshinori Tokura; Tsutomu Kanno; Hideaki Adachi
The electronic conduction through a
Advanced Materials | 2016
Hiromasa Tamaki; Hiroki Sato; Tsutomu Kanno
{\mathrm{Pr}}_{0.7}{\mathrm{Ca}}_{0.3}\mathrm{Mn}{\mathrm{O}}_{3}
Applied Physics Letters | 2004
Tsutomu Kanno; Satoshi Yotsuhashi; Hideaki Adachi
thin film is investigated by measurements using dc and pulsed biases. Semiconducting
Applied Physics Letters | 2009
Tsutomu Kanno; Satoshi Yotsuhashi; Akihiro Sakai; Kouhei Takahashi; Hideaki Adachi
{\mathrm{Pr}}_{0.7}{\mathrm{Ca}}_{0.3}\mathrm{Mn}{\mathrm{O}}_{3}
Japanese Journal of Applied Physics | 2005
Akihiro Sakai; Tsutomu Kanno; Satoshi Yotsuhashi; Akihiro Odagawa; Hideaki Adachi
films sandwiched by electrodes show both hysteretic and asymmetric behaviors in current-voltage characteristics. The observed conduction characteristics exhibit the space-charge-limited-current effect, and the hysteretic behavior can be ascribed to a carrier trapping and detrapping of the trap sites in the manganite. The hysteresis induces a colossal electroresistance (CER) of more than 5000% at room temperature. The CER ratio is independent of the duration time of pulses from an infinite (dc) down to
Applied Physics Letters | 2012
Tsutomu Kanno; Akihiro Sakai; Kouhei Takahashi; Atsushi Omote; Hideaki Adachi; Yuka Yamada
150\phantom{\rule{0.3em}{0ex}}\mathrm{ns}
Applied Physics Letters | 2010
Kouhei Takahashi; Tsutomu Kanno; Akihiro Sakai; Hideaki Adachi; Yuka Yamada
, indicating that the carrier filling of all the traps can be completed within a short time.
Journal of Applied Physics | 2006
Akihiro Odagawa; Tsutomu Kanno; Hideaki Adachi
Thermoelectric performance in the layered Zintl phase n-type Mg3+δ (Sb,Bi)2 is reported. Insertion of the excess Mg into the compounds is crucial for realizing n-type carrier transport with multivalley and isotropic character. An excellent ZT of 1.51 ± 0.06 at 716 K is achieved in the sintered polycrystals at the composition of Mg3.2 Sb1.5 Bi0.49 Te0.01 .
Scientific Reports | 2013
Kouhei Takahashi; Tsutomu Kanno; Akihiro Sakai; Hiromasa Tamaki; Hideo Kusada; Yuka Yamada
We have fabricated epitaxial thin films of layered cobaltite AxCoO2 (A=Sr and Ca) on sapphire substrates by rf magnetron sputtering. The grown phase in the AxCoO2 films was found to be a monoclinic β-phase of primitive layered cobaltites and the epitaxial orientation of the film could be controlled by the surface plane of the substrates. The resistivity parallel to the CoO2 layers ρ‖ for the β-SrxCoO2 is as low as 2mΩcm at room temperature and shows metallic behavior. The ratio of perpendicular resistivity ρ⊥ to ρ‖ increases from 20 at room temperature to 90 at 3K. More isotropic nature was observed in the Seebeck coefficient. Parallel Seebeck coefficients S‖ of AxCoO2 are approximately 60μV∕K at room temperature and the perpendicular S⊥ are about half of S‖.
Applied Physics Letters | 2009
Kouhei Takahashi; Akihiro Sakai; Tsutomu Kanno; Hideaki Adachi
We investigated transverse thermoelectric response in tilted Bi/Cu multilayer. Estimation through an equivalent circuit model showed that transverse thermoelectric power factor (PF) reaching 155 μW/cm K2 is possible with optimum device parameters. Finite element analysis confirmed the validity of the estimation using tensorial representation, which implicitly assumes homogeneous anisotropy. The Bi/Cu multilayer was fabricated by pressure injection of molten Bi into a periodically slitted Cu block. The measurement of the fabricated sample verified an enhancement in transverse PF up to 50.1 μW/cm K2, which is approximately 1.5 times greater than the conventional PF of constituent Bi, 34 μW/cm K2.