85 citations · 281 across the 14 of their papers we have counts for
14 papers
Effect of pressure on the superconducting properties of Au substituted PdTe with the CdI-type structure
Ayako Ohmura, Kazuki Ichikawa, Kyohei Tanaka +5
Transition metal ditellurides with the CdI-type structure are materials with intriguing superconducting and electronic properties as demonstrated by PdTe. Gold substituted…
Superconducting and structural properties of the type-I superconductor PdTe2 under high pressure
Yusaku Furue, Tadachika Fujino, Marc V. Salis +7
The transition metal dichalcogenide PdTe has attractive features based on its classification as a type-II Dirac semimetal and the occurrence of type-I superconductivity, provid…
Neural Network Approach to Construction of Classical Integrable Systems
Fumihiro Ishikawa, Hidemaro Suwa, Synge Todo
Integrable systems have provided various insights into physical phenomena and mathematics. The way of constructing many-body integrable systems is limited to few ansatzes for the L…
Cluster glass transition and relaxation in random spinel CoGa2O4
T. Naka, T. Nakane, S. Ishii +6
We report magnetic properties in the random spinel magnet CoGa2O4. Rietveld analysis of the x-ray diffraction profile for CoGa2O4 reveals that the Co and Ga ions are distributed ra…
Superconductivity under pressure in the Dirac semimetal PdTe2
H. Leng, A. Ohmura, L. N. Anh +4
The Dirac semimetal PdTe was recently reported to be a type-I superconductor (1.64 K, mT) with unusual superconductivity of the surface sheath. We…
Localized Mode and Nonergodicity of a Harmonic Oscillator Chain
Fumihiro Ishikawa, Synge Todo
We present a simple and microscopic physical model that breaks the ergodicity. Our model consists of coupled classical harmonic oscillators, and the motion of the tagged particle o…
Pressure-induced topological phase transition in polar semiconductor BiTeBr
Ayako Ohmura, Yuichiro Higuchi, Takayuki Ochiai +6
We performed X-ray diffraction and electrical resistivity measurement up to pressures of 5 GPa and the first-principles calculations utilizing experimental structural parameters to…
Composition induced metal-insulator quantum phase transition in the Heusler type Fe2VAl
Takashi Naka, Artem M. Nikitin, Yu Pan +6
We report the magnetism and transport properties of the Heusler compound Fe2+xV1-xAl at -0.10 < x < 0.10 under pressure and a magnetic field. A metal-insulator quantum phase transi…
Collapse of CuO Double Chains and Suppression of Superconductivity in High-Pressure Phase of YBaCuO
Atsuko Nakayama, Yusuke Onda, Shuhei Yamada +8
The crystal structure and electrical resistivity of YBaCuO (Y124) were studied under high pressure up to 18 GPa using diamond-anvil cells, respectively, in order to cla…
Synthesis of New Layered Oxypnictides Sr2CrO2(FeAs)2
Naoya Eguchi, Fumihiro Ishikawa, Michihiro Kodama +4
We successfully synthesized new layered iron oxypnictide Sr2CrO2(FeAs)2 by solid-state-reaction techniques. This is the first report on the Fe-substituted Sr2Mn3As2O2-type oxypnict…
Pressure-induced phase transition of Bi2Te3 into the bcc structure
Mari Einaga, Ayako Ohmura, Atsuko Nakayama +3
The pressure-induced phase transition of bismuth telluride, Bi2Te3, has been studied by synchrotron x-ray diffraction measurements at room temperature using a diamond-anvil cell (D…
Weak itinerant ferromagnetism in Heusler type Fe2VAl0.95
K. Sato, T. Naka, M. Taguchi +7
We report measurements of the magnetic, transport and thermal properties of the Heusler type compound Fe2VAl0.95. We show that while stoichiometric Fe2VAl is a non-magnetic semi-me…
Pressure-induced superconductivity in EuCaFeAs : FeAs-based superconductivity hidden by antiferromagnetism of Eu sublattice
Akihiro Mitsuda, Tomohiro Matoba, Hirofumi Wada +2
To clarify superconductivity in EuFe2As2 hidden by antiferromagnetism of Eu2+, we investigated a Ca-substituted sample, Eu0.5Ca0.5Fe2As2, under high pressure. For ambient pressure,…
Physical properties of a new cuprate superconductor Pr_2Ba_4Cu_7O_{15-δ}
Akiyuki Matsushita, Kazunori Fukuda, Yuh Yamada +4
We present studies of the thermal, magnetic and electrical transport properties of reduced polycrystalline Pr_2Ba_4Cu_7O_{15-δ} (Pr247) showing a superconducting transition at Tc =…