A5029659497- Quantum and electron transport phenomena
- Physics of Superconductivity and Magnetism
- Semiconductor Quantum Structures and Devices
- Nuclear Physics and Applications
- Graphite, nuclear technology, radiation studies
- Magnetic properties of thin films
- Radiation Therapy and Dosimetry
- Radiation Detection and Scintillator Technologies
- Nuclear reactor physics and engineering
- Graphene research and applications
- Topological Materials and Phenomena
- Advancements in Semiconductor Devices and Circuit Design
- Surface and Thin Film Phenomena
- Nuclear and radioactivity studies
- Advanced Thermoelectric Materials and Devices
- ZnO doping and properties
- Electronic and Structural Properties of Oxides
- Electron and X-Ray Spectroscopy Techniques
- Semiconductor materials and devices
- Radioactive contamination and transfer
- Advanced Thermodynamics and Statistical Mechanics
- Quantum Information and Cryptography
- Microbial Metabolism and Applications
- Molecular Junctions and Nanostructures
- Magnetic and transport properties of perovskites and related materials
The University of Tokyo
2013-2025
Delft University of Technology
2022-2024
Japan Atomic Energy Agency
2005-2023
Iwata City Hospital
2022
Shimane University
2020
International Summer School of Photography
2018
Shimane University Hospital
2017
Czech Academy of Sciences, Institute of Physics
2013-2015
Institute for Atomic Energy Research
2014
University of Yamanashi
2011
A new GaAs-based diluted magnetic semiconductor, (Ga,Mn)As, was prepared by molecular beam epitaxy. The lattice constant of (Ga,Mn)As films determined x-ray diffraction and shown to increase with the Mn composition, x. Well-aligned in-plane ferromagnetic order observed magnetization measurements. Magnetotransport measurements revealed occurrence anomalous Hall effect in layer.
Pyrochlore iridates have provided a plethora of novel phenomena owing to the combination topology and correlation. Among them, much attention has been paid [Formula: see text], as it is known Luttinger semimetal characterized by quadratic band touching at Brillouin zone center, suggesting that its electronic states can be tuned moderate lattice strain external magnetic field. Here, we report our epitaxial text] thin films grown solid-state epitaxy exhibit spontaneous Hall effect persists up...
We have observed an oscillatory magnetoresistance effect in a two-dimensional electron gas GaAs/AlGaAs heterojunctions subjected to periodically modulated magnetic field generated using striped gate electrode of ferromagnetic metal. The hysteretic part clearly shows oscillations analogous the so-called Weiss oscillation with phase relation predicted for case vector potential modulation.
The mechanism of action 3‐hydroxy‐3‐methylglutaryl‐CoA reductase solubilized from rat liver microsomes has been investigated. In the reduction to mevalonate, an overall initial velocity study gave a linear intersecting pattern when both and NADPH were variable substrates. Adenosine 2′‐monophospho‐5′‐diphos‐phoribose, which was found be reversible inhibitor reductase, inhibited enzyme competitively with respect NADPH, uncompetitively 3‐hydroxy‐3‐methylglutaryl‐CoA. On other hand, inhibition...
We have investigated the magnetic and transport properties of (In,Mn)As thin films grown on a (Ga,Al)Sb layer. Strong perpendicular anisotropy is observed for layer, thickness which less than critical value required relaxation lattice-mismatch-induced strain. The anomalous Hall coefficient found to be approximately proportional square resistivity in low-field region. Large negative magnetoresistance occur over field range significantly wider that ferromagnetic hysteresis loop.
We have studied the electronic transport in a two-dimensional electron gas (2DEG) subjected to spatially modulated magnetic field and electrostatic potential. Independent control of components parallel perpendicular 2DEG plane allows us manipulate amplitude modulation independently normal component relevant magnetotransport 2DEG. The amplitudes modulations can be evaluated from an analysis commensurability oscillation magnetoresistance. increase resistivity presence at zero uniform is found...
Electrochemical characteristics of three types (LSC) and (LSM) electrodes, (dense, porous, porous/dense double layer) were measured. The dense layers LSC LSM prepared by a laser ablation method the porous tape‐casting method. measurements (ac impedance dc polarization measurements) revealed that surface area is an important factor for reaction rate on electrode, while electrode/electrolyte boundary structure electrode. These results indicate high performance electrodes can be obtained using...
Abstract Oxidative stress or signaling is widely implicated in apoptosis, ischemia and mitogenesis. Previously, our group reported that the hydrogen peroxide (H 2 O )‐dependent activation of phospholipase D2 (PLD2) PC12 cells involved anti‐apoptotic effect. However, precise mechanism PLD2 by H was not revealed. To find ‐dependent PLD2‐regulating proteins, we immunoprecipitated from found glyceraldehyde 3‐phosphate dehydrogenase (GAPDH) coimmunoprecipitated with upon treatment. This...
Journal Article WAZA-ARI: computational dosimetry system for X-ray CT examinations. I. Radiation transport calculation organ and tissue doses evaluation using JM phantom Get access Fumiaki Takahashi, Takahashi * 1Japan Atomic Energy Agency, 2-4 Shirakata, Tokai-mura, Ibaraki 319-1195, Japan *Corresponding author: takahashi.fumiaki@jaea.go.jp Search other works by this author on: Oxford Academic PubMed Google Scholar Kaoru Sato, Sato Akira Endo, Endo Koji Ono, Ono 2Oita Prefecture-Mie...
This paper discusses the science case for a sensitive spectro-polarimetric survey of microwave sky. Such would provide tomographic and dynamic census three-dimensional distribution hot gas, velocity flows, early metals, dust, mass in entire Hubble volume, exploit CMB temperature polarisation anisotropies down to fundamental limits, track energy injection absorption into radiation background across cosmic times by measuring spectral distortions blackbody emission. In addition its exceptional...
The envelope of the commensurability magnetoresistance oscillation (Weiss oscillation) has been studied for lateral superlattices prepared from two-dimensional electron gas (2DEG) wafers with varying mobility $\ensuremath{\mu}$ and spacer-layer thickness ${d}_{s}.$ When 2DEG a high enough large ${d}_{s},$ is well described by formula given Peeters Vasilopoulos in first-order perturbation theory [Phys. Rev. B 46, 4667 (1992).]. For smaller or diminishes faster than at lower B. damping can be...