A5050708794- Surface and Thin Film Phenomena
- Advanced Chemical Physics Studies
- Electron and X-Ray Spectroscopy Techniques
- Semiconductor materials and interfaces
- nanoparticles nucleation surface interactions
- Advanced Materials Characterization Techniques
- X-ray Spectroscopy and Fluorescence Analysis
- Physics of Superconductivity and Magnetism
- Advancements in Battery Materials
- Chemical Synthesis and Reactions
- Nuclear Physics and Applications
- Ion-surface interactions and analysis
- Quantum and electron transport phenomena
- Semiconductor materials and devices
- Topological Materials and Phenomena
- Power Systems and Renewable Energy
- Porphyrin and Phthalocyanine Chemistry
- GaN-based semiconductor devices and materials
- Transition Metal Oxide Nanomaterials
- Catalytic Processes in Materials Science
- Magnetic and transport properties of perovskites and related materials
- ZnO doping and properties
- Superconductivity in MgB2 and Alloys
- Differential Equations and Numerical Methods
- Radiative Heat Transfer Studies
University of Tsukuba
1988-2019
Saitama University
2000-2001
Urawa University
2000
Lawrence Berkeley National Laboratory
1993
University of Hawaii System
1992
Czech Academy of Sciences, Institute of Physics
1990
Tohoku University
1983-1987
Hoshi University
1987
Si 2p and Ag 4d photoelectron spectra have been measured for the Si(111)\ensuremath{\surd}3 \ifmmode\times\else\texttimes\fi{} \ensuremath{\surd}3 -Ag surface at both surface- bulk-sensitive photon energies. A dramatic shift of bulk component has observed is attributed to presence an inherently charged layer. single levels found surface. Discussion structural growth models made.
LEED observation and analysis of the submonolayer interfaces Au/Si(111) have been reported. It is shown that a well-ordered √3×√3 surface not formed in this system. Instead, unusual patterns appear with either diffuse, sharp diffuse or ring-like spots depending on Au coverage. A kinematical for various coverages implies are due to early stages formation 6×6 surface.
We have measured the temperature dependence of valence and core x-ray photoelectron intensities for W(110). At 295 K, spectra are very sensitive to emission direction due direct-transition effects, Ienergy-integratedR diffraction curves similar in form, but with significant differences fine structure. 803 by contrast insensitive increased zone averaging, retain atomic-orbital character initial final states involved.
It is found by X-ray photoelectron spectroscopy and LEED that the saturation coverage of Bi one monolayer for Si(111)√3×√3-Bi surface. Azimuthal dependence 4d diffraction has been measured surface analyzed kinematically. The results analysis have confirmed presence Bi-triplets with sides 3.1 Å as proposed diffraction. further form an overlayer on substrate.
The effect of triaxial spin projection on the potential energy surface in deformation parameter space (ε, γ) is investigated for three nuclei, 142Nd, 168Er and 188Os. calculation performed two sets spherical single-particle an effective monopole-pairing plus quadrupole-quadrupole interaction. correlations taken into account by have driving system toward a deformation, irrespective shell fillings nuclei.
Neutron-irradiated graphites were studied by reflectivity and photoemission (UPS, ARUPS, XPS) measurements. The π-band peak of graphite, located at 5 eV, changed significantly a small absorption band ascribed to vacancies produced neutron bombardment was found grow around 3 eV. Modification the valence irradiation ARUPS. π-valence shifts lower binding energy towards Fermi level its width becomes smaller. These results also confirmed optical joint density states obtained from K-K analysis...
Scanning tunneling microscopy (STM) is used to investigate a 6×6 surface phase of the Au/Si(111) interface. Results show that no well-ordered structure present on this surface. Instead, two ordered and one disordered sublattices are observed be formed in distance scale 500 Å. A kinematical calculation diffraction patterns carried out taking into account difference sublattice order. The reproduces main features reported electron-diffraction well. comparison these results with those previous...
The 3d transition metal oxides with layered structures, NaxMO2 (M = Mn, Co), are promising cathode materials for Na-ion secondary batteries. Here, we investigate the electronic structure of M four (Na0.91CoO2, Na0.66CoO2, Na1.00MnO2, and Na0.54MnO2) by means high energy resolution fluorescence detected X-ray absorption near-edge structure, which utilizes 1s core-hole lifetime-broadening reduction. highly energy-resolved spectroscopy reveals a shoulder in pre-edge regions Co K-edge spectra...