Matsunami, M., Chainani, A., Taguchi, M., Eguchi, R., Ishida, Y., Takata, Y., ...
Hard x-ray photoemission and optical spectroscopies have been performed on YbS and Yb metal to determine the precise $f$-electron occupation. A comparison of the photoemission spectra with the energy...
Locality and nonlocality in quantum pure-state identification problems (2008)
Ishida, Y., Hashimoto, T., Horibe, M., Hayashi, A.
Suppose we want to identify an input state with one of two unknown reference states, where the input state is guaranteed to be equal to one of the reference states. We assume that no classical...
Remote hole-doping of Mott insulators on the nanometer scale (2008)
Takizawa, M., Hotta, Y., Susaki, T., Ishida, Y., Wadati, H., Takata, Y., ...
At interfaces between polar and nonpolar perovskite oxides, an unusual electron-doping has been previously observed, due to electronic reconstructions. We report on remote hole-doping at an interface...
Evidence for Pseudogap Evolutions in High-Tc Iron Oxypnictides (2008)
Ishida, Y., Shimojima, T., Ishizaka, K., Kiss, T., Okawa, M., Togashi, T., ...
We have performed a temperature-dependent angle-integrated laser photoemission study of iron oxypnictide superconductors LaOFeAs:F and LaOFeP:F exhibiting critical transition temperatures (Tc's) of...
Kobayashi, M., Ishida, Y., Hwang, J. I., Song, G. S., Fujimori, A., ...
The electronic structure of the Cr ions in the diluted ferromagnetic semiconductor Zn$_{1-x}$Cr$_x$Te ($x=0.03$ and 0.15) thin films has been investigated using x-ray magnetic circular dichroism...
Kobayashi, M., Ishida, Y., Hwang, J. I., Song, G. S., Takizawa, M., Fujimori, A., ...
The electronic structure of In$_{2-x}$V$_x$O$_3$ ($x=0.08$) has been investigated using photoemission spectroscopy (PES) and x-ray absorption spectroscopy (XAS). The V $2p$ core-level PES and XAS...
Ishida, Y, Chen, C, Hagihara, M, Yamakami, T, Hayashibe, R, Abe, K, ...
Nonlocality in unambiguous pure-state identification without classical knowledge (2007)
Hayashi, A., Ishida, Y., Hashimoto, T., Horibe, M.
For two bipartite pure states, we consider the problem of unambiguous identification without classical knowledge on the states. The optimal success probability by means of local operations and...
Local Quantum Pure-state Identification without Classical Knowledge (2007)
Ishida, Y., Hashimoto, T., Horibe, M., Hayashi, A.
Suppose we want to distinguish two quantum pure states. We consider the case in which no classical knowledge on the two states is given and only a pair of samples of the two states is available. This...
Coherent and Incoherent States of Electron-doped SrTiO3 (2007)
Ishida, Y., Eguchi, R., Matsunami, M., Horiba, K., Taguchi, M., Chainani, A., ...
Resonant photoemission at the Ti 2p and O 1s edges on a Nb-doped SrTiO3 thin film revealed that the coherent state (CS) at the Fermi level (EF) had mainly Ti 3d character whereas the incoherent...
Depth profile photoemission study of thermally diffused Mn/GaAs (001) interfaces (2007)
Osafune, Y., Song, G. S., Hwang, J. I., Ishida, Y., Kobayashi, M., Ebata, K., ...
We have performed a depth profile study of thermally diffused Mn/GaAs (001) interfaces using photoemission spectroscopy combined with Ar$^+$-ion sputtering. We found that Mn ion was thermally...
Ishida, Y., Kobayashi, M., Hwang, J. I., Takeda, Y., Okane, T., ...
We have performed x-ray magnetic circular dichroism (XMCD) and valence-band photoemission studies of the diluted ferromagnetic semiconductor Zn$_{1-x}$Cr$_x$Te. XMCD signals due to ferromagnetism...
Revisiting the valence-band and core-level photoemission spectra of NiO (2007)
Taguchi, M., Matsunami, M., Ishida, Y., Eguchi, R., Chainani, A., Takata, Y., ...
We have re-examined the valence-band (VB) and core-level electronic structure of NiO by means of hard and soft x-ray photoemission spectroscopy (PES). The spectral weight of the lowest energy state...
Depth profile high-energy spectroscopic study of Mn-doped GaN prepared by thermal diffusion (2007)
Hwang, J. I., Osafune, Y., Kobayashi, M., Ebata, K., Ooki, Y., Ishida, Y., ...
We have performed an $in$-$situ$ depth profile study of Mn-doped GaN prepared by a low temperature thermal diffusion method using photoemission and x-ray absorption spectroscopy. It was revealed from...
Ishida, Y., Hwang, J. I., Kobayashi, M., Takeda, Y., Mamiya, K., Okamoto, J., ...
We performed a soft x-ray magnetic circular dichroism (XMCD) study of a Zn$_{1-x}$V$_x$O thin film which showed small ferromagnetic moment. Field and temperature dependences of V 2$p$ XMCD signals...
Photoemission evidence for a Mott-Hubbard metal-insulator transition in VO$_2$ (2006)
Eguchi, R., Taguchi, M., Matsunami, M., Horiba, K., Yamamoto, K., Ishida, Y., ...
The temperature ($T$) dependent metal-insulator transition (MIT) in VO$_2$ is investigated using bulk sensitive hard x-ray ($\sim$ 8 keV) valence band, core level, and V 2$p-3d$ resonant...
Ishida, Y., Ohta, H., Hirano, M., Fujimori, A., Hosono, H.
We have performed a depth-profile analysis of an all-oxide p-n junction diode n-ZnO/p-NiO using photoemission spectroscopy combined with Ar-ion sputtering. Systematic core-level shifts were observed...
Effect of Reducing Atmosphere on the Magnetism of Zn1-xCoxO Nanoparticles (2005)
Naeem, M., Hasanain, S. K., Kobayashi, M., Ishida, Y., Fujimori, A., Buzby, Scott, ...
We report the crystal structure and magnetic properties of Zn1-xCoxO nanoparticles synthesized by heating metal acetates in organic solvent. The nanoparticles were crystallized in wurtzite ZnO...
Ishida, Y., Ohta, H., Fujimori, A., Hosono, H.
We have performed a temperature-dependent photoemission study of a NaxCoO2 (x~0.8) epitaxial thin film prepared by the reactive solid-phase epitaxy method. The chemical potential shift as a function...
Kobayashi, M., Ishida, Y., Hwang, J. L., Mizokawa, T., Fujimori, A., Mamiya, K., ...
We report on the results of x-ray absorption (XAS), x-ray magnetic circular dichroism (XMCD), and photoemission experiments on {\it n}-type Zn$_{1-x}$Co$_x$O ($x=0.05$) thin film, which shows...
Hwang, J. I., Ishida, Y., Kobayashi, M., Hirata, H., Takubo, K., Mizokawa, T., ...
We have studied the electronic structure of the diluted magnetic semiconductor Ga$_{1-x}$Mn$_{x}$N ($x$ = 0.0, 0.02 and 0.042) grown on Sn-doped $n$-type GaN using photoemission and soft x-ray...
Technique for bulk Fermiology by photoemission applied to layered ruthenates (2004)
Sekiyama, A., Kasai, S., Tsunekawa, M., Ishida, Y., Sing, M., Irizawa, A., ...
We report the Fermi surfaces of the superconductor Sr2RuO4 and the non-superconductor Sr1.8Ca0.2RuO4 probed by bulk-sensitive high-energy angle-resolved photoemission. It is found that there is one...
Sugimura, H, Saito, N, Maeda, N, Ikeda, I, Ishida, Y, Hayashi, K, ...
In situ photoemission study of the room-temperature ferromagnet ZnGeP_2:Mn (2003)
Ishida, Y., Sarma, D. D., Okazaki, K., Okabayashi, J., Hwang, J. I., Ott, H., ...
The chemical states of the ZnGeP$_{2}$:Mn interface, which shows ferromagnetism above room-temperature, has been studied by photoemission spectroscopy. Mn deposition on the ZnGeP$_2$ substrate heated...
Molecular mechanism of acute and chronic liver injuries (2003)
Kitamura, K., Akiyama, M., Ishida, Y., Kondo, T., Mukaida, N.
Development of an RF Ion Guide for Trapping Energetic Radioactive Nuclear Ions (2002)
Wada, M., Ishida, Y., Nakamura, T., Oshima, N., Nakai, Y.
Although the projectile fragment separator (RIPS) at the RIKEN accelerator facility (RARF) provides wide variety of energetic radioactive beams, it is not adequate for low energy beam experiments...
Tanaka, K., Mori, M., Ishida, Y.
Structure of Sigma=3 incoherent twin boundaries in SUS316 austenitic stainless steels were analyzed by the Weak-Beam alpha-Fringe Method; fringe shifts at grain boundaries at common weak-beam...
Tanaka, K., Mori, M., Ishida, Y.
Sigma=3 incoherent twin boundary had some in-plane translation (mainly (111) direction) without appreciable excess volume; previous Weak-Beam alpha-fringe observation, however, showed that many...
Vrieling, E.G., Koeman, R.P.T., Nagasaki, K., Ishida, Y., Peperzak, L., Gieskes, W.W.C., ...
Species of the potentially toxic and red-tide-forming marine-phytoplankton genera Chattonella and Fibrocapsa (Raphidophyceae) were observed for the first time in 1991 in samples taken in Dutch...
COMPUTER SIMULATION OF THE (10(-1)2) TWIN ATOMIC STRUCTURE IN HCP METALS (1990)
HagÈge, S., Mori, M., Ishida, Y.
The relaxed atomic structure of the (10[MATH]2) mechanical twin has been investigated by computer simulation based on a Lennard-Jones pair potential. The two original lowest energy configurations...
FRONTIERS OF INTERFACIAL AND ATOMIC STRUCTURES STUDIES (1990)
Interfaces are classified by the parameter describing the interface and the structural features are discussed taking as examples recent works carried out in the author's laboratory. They are faulted...
The atomic process of both the grain boundary migration and the structure transformation of (111)A/BΣ3 and (112)A/BΣ3 CSL boundaries in silicon was investigated in-situ by the HRTEM at...
Takahashi, Y., Tomita, N., Mori, M., Ishida, Y.
Grain boundaries in Bi2Sr2CaCu2O8 superconductor were examined by transmission electron microscopy and resistivity measurement. The former showed that [001] - twist boundaries were abundant in...
COMPUTER SIMULATION OF THE (10(-1)2) TWIN ATOMIC STRUCTURE IN HCP METALS (1990)
HagÈge, S., Mori, M., Ishida, Y.
The relaxed atomic structure of the (10[MATH]2) mechanical twin has been investigated by computer simulation based on a Lennard-Jones pair potential. The two original lowest energy configurations...
FRONTIERS OF INTERFACIAL AND ATOMIC STRUCTURES STUDIES (1990)
Interfaces are classified by the parameter describing the interface and the structural features are discussed taking as examples recent works carried out in the author's laboratory. They are faulted...
The atomic process of both the grain boundary migration and the structure transformation of (111)A/BΣ3 and (112)A/BΣ3 CSL boundaries in silicon was investigated in-situ by the HRTEM at...
Takahashi, Y., Tomita, N., Mori, M., Ishida, Y.
Grain boundaries in Bi2Sr2CaCu2O8 superconductor were examined by transmission electron microscopy and resistivity measurement. The former showed that [001] - twist boundaries were abundant in...
COMPUTER SIMULATION OF THE (10(-1)2) TWIN ATOMIC STRUCTURE IN HCP METALS (1990)
HagÈge, S., Mori, M., Ishida, Y.
The relaxed atomic structure of the (10[MATH]2) mechanical twin has been investigated by computer simulation based on a Lennard-Jones pair potential. The two original lowest energy configurations...
FRONTIERS OF INTERFACIAL AND ATOMIC STRUCTURES STUDIES (1990)
Interfaces are classified by the parameter describing the interface and the structural features are discussed taking as examples recent works carried out in the author's laboratory. They are faulted...
The atomic process of both the grain boundary migration and the structure transformation of (111)A/BΣ3 and (112)A/BΣ3 CSL boundaries in silicon was investigated in-situ by the HRTEM at...
Takahashi, Y., Tomita, N., Mori, M., Ishida, Y.
Grain boundaries in Bi2Sr2CaCu2O8 superconductor were examined by transmission electron microscopy and resistivity measurement. The former showed that [001] - twist boundaries were abundant in...
HIGH RESOLUTION ELECTRON MICROSCOPY OF INTERFACES IN FUNCTIONAL MATERIALS (1988)
Ishida, Y., Ichinose, H., Takahashi, Y.
Our recent high resolution electron microsocpic observation of various interfaces in functional materials such as semiconductor superlattice, superconducting perovskite ceramic, new engineering...
HVEM AND HREM OF INTERFACES IN ALUMINIUM NITRIDE CERAMICS (1988)
Hagege, S., Ishida, Y., Tanaka, S.
Impurities in the wurtzite structure of aluminium nitride (AlN 2H) ceramics are accommodated by a pair of very particular interfaces. An analysis of their structure has been performed using high...
HIGH RESOLUTION ELECTRON MICROSCOPY OF INTERFACES IN FUNCTIONAL MATERIALS (1988)
Ishida, Y., Ichinose, H., Takahashi, Y.
Our recent high resolution electron microsocpic observation of various interfaces in functional materials such as semiconductor superlattice, superconducting perovskite ceramic, new engineering...
HVEM AND HREM OF INTERFACES IN ALUMINIUM NITRIDE CERAMICS (1988)
Hagege, S., Ishida, Y., Tanaka, S.
Impurities in the wurtzite structure of aluminium nitride (AlN 2H) ceramics are accommodated by a pair of very particular interfaces. An analysis of their structure has been performed using high...
HIGH RESOLUTION ELECTRON MICROSCOPY OF INTERFACES IN FUNCTIONAL MATERIALS (1988)
Ishida, Y., Ichinose, H., Takahashi, Y.
Our recent high resolution electron microsocpic observation of various interfaces in functional materials such as semiconductor superlattice, superconducting perovskite ceramic, new engineering...
HVEM AND HREM OF INTERFACES IN ALUMINIUM NITRIDE CERAMICS (1988)
Hagege, S., Ishida, Y., Tanaka, S.
Impurities in the wurtzite structure of aluminium nitride (AlN 2H) ceramics are accommodated by a pair of very particular interfaces. An analysis of their structure has been performed using high...
Saito, H., Ishida, Y., Yoshida, H.
The effect of hydrogen on the properties Al-Li alloys were investigated by using three tritium tracer techniques ; cold trapping, radio-gas analysis and tritium transmission electron microscopic...
Tanaka, M., Ichinose, H., Furuta, T., Ishida, Y., Sakaki, H.
Electron microscopic observation was made on GaAs-AlAs heterointeraces grown by molecular beam epitaxy with accurately controlled layer thickness and growth interruptions for smoothing interface...
Investigation of controlled ultrashort pulse dye laser for femtosecond nonlinear spectroscopy (1987)
Characteristics of a simple but practical ultrashort pulse laser system for transient nonlinear spectroscopy around and below 100 fs are described. The system is based on a hybridly mode-locked,...
TRITIUM RELEASE CHARACTERISTICS OF Al-Li ALLOYS EXAMINED BY LIQUID SCINTILLATION TECHNIQUE (1987)
Saito, H., Ishida, Y., Yoshida, H.
Hydrogen release characteristics of Al-Li alloys at room temperature were examined by liquid scintillation analysis of tritium which has been doped electrolytically in the bulk specimen. The tritium,...
Saito, H., Ishida, Y., Yoshida, H.
The effect of hydrogen on the properties Al-Li alloys were investigated by using three tritium tracer techniques ; cold trapping, radio-gas analysis and tritium transmission electron microscopic...
Tanaka, M., Ichinose, H., Furuta, T., Ishida, Y., Sakaki, H.
Electron microscopic observation was made on GaAs-AlAs heterointeraces grown by molecular beam epitaxy with accurately controlled layer thickness and growth interruptions for smoothing interface...
Investigation of controlled ultrashort pulse dye laser for femtosecond nonlinear spectroscopy (1987)
Characteristics of a simple but practical ultrashort pulse laser system for transient nonlinear spectroscopy around and below 100 fs are described. The system is based on a hybridly mode-locked,...
TRITIUM RELEASE CHARACTERISTICS OF Al-Li ALLOYS EXAMINED BY LIQUID SCINTILLATION TECHNIQUE (1987)
Saito, H., Ishida, Y., Yoshida, H.
Hydrogen release characteristics of Al-Li alloys at room temperature were examined by liquid scintillation analysis of tritium which has been doped electrolytically in the bulk specimen. The tritium,...
Saito, H., Ishida, Y., Yoshida, H.
The effect of hydrogen on the properties Al-Li alloys were investigated by using three tritium tracer techniques ; cold trapping, radio-gas analysis and tritium transmission electron microscopic...
Tanaka, M., Ichinose, H., Furuta, T., Ishida, Y., Sakaki, H.
Electron microscopic observation was made on GaAs-AlAs heterointeraces grown by molecular beam epitaxy with accurately controlled layer thickness and growth interruptions for smoothing interface...
Investigation of controlled ultrashort pulse dye laser for femtosecond nonlinear spectroscopy (1987)
Characteristics of a simple but practical ultrashort pulse laser system for transient nonlinear spectroscopy around and below 100 fs are described. The system is based on a hybridly mode-locked,...
TRITIUM RELEASE CHARACTERISTICS OF Al-Li ALLOYS EXAMINED BY LIQUID SCINTILLATION TECHNIQUE (1987)
Saito, H., Ishida, Y., Yoshida, H.
Hydrogen release characteristics of Al-Li alloys at room temperature were examined by liquid scintillation analysis of tritium which has been doped electrolytically in the bulk specimen. The tritium,...
HIGH RESOLUTION ELECTRON MICROSCOPY OF GRAIN BOUNDARIES IN fcc AND bcc METALS (1985)
HREM observation of small and high angle boundaries was performed in gold and iron in order to assess the influence of the crystal structure. A small angle boundary consisting of dislocation arrays...
THEORETICAL STUDIES OF SEGREGATED INTERNAL INTERFACES (1985)
Molecular dynamic calculations were performed on the grain boundary structure of iron, especially [100] and [110] symmetrical tilt coincidence-related boundaries segregated with phosphorous atoms...
HIGH RESOLUTION ELECTRON MICROSCOPY OF GRAIN BOUNDARIES IN fcc AND bcc METALS (1985)
HREM observation of small and high angle boundaries was performed in gold and iron in order to assess the influence of the crystal structure. A small angle boundary consisting of dislocation arrays...
THEORETICAL STUDIES OF SEGREGATED INTERNAL INTERFACES (1985)
Molecular dynamic calculations were performed on the grain boundary structure of iron, especially [100] and [110] symmetrical tilt coincidence-related boundaries segregated with phosphorous atoms...
HIGH RESOLUTION ELECTRON MICROSCOPY OF GRAIN BOUNDARIES IN fcc AND bcc METALS (1985)
HREM observation of small and high angle boundaries was performed in gold and iron in order to assess the influence of the crystal structure. A small angle boundary consisting of dislocation arrays...
THEORETICAL STUDIES OF SEGREGATED INTERNAL INTERFACES (1985)
Molecular dynamic calculations were performed on the grain boundary structure of iron, especially [100] and [110] symmetrical tilt coincidence-related boundaries segregated with phosphorous atoms...
PSEUDOGAP AND ANOMALOUS DISPERSION OF EXPANDED LIQUID MERCURY (1980)
Ishida, Y., Asano, S., Yonezawa, F.
The existence of a pseudogap in the density of states of expanded liquid mercury is ascertained from first principles. The dispersion of expanded fluid mercury is calculated both by the relativistic...
PSEUDOGAP AND ANOMALOUS DISPERSION OF EXPANDED LIQUID MERCURY (1980)
Ishida, Y., Asano, S., Yonezawa, F.
The existence of a pseudogap in the density of states of expanded liquid mercury is ascertained from first principles. The dispersion of expanded fluid mercury is calculated both by the relativistic...
PSEUDOGAP AND ANOMALOUS DISPERSION OF EXPANDED LIQUID MERCURY (1980)
Ishida, Y., Asano, S., Yonezawa, F.
The existence of a pseudogap in the density of states of expanded liquid mercury is ascertained from first principles. The dispersion of expanded fluid mercury is calculated both by the relativistic...
MÖSSBAUER ANALYSIS OF GRAIN BOUNDARIES AS A FUNCTION OF THE GRAIN BOUNDARY STRUCTURE (1979)
Ichinose, H., Hashimoto, M., Ishida, Y.
Both polycrystalline and bicrystalline silver foils with a small amount of 119mSn sandwiched in the boundary were produced and the Mössbauer spectra were recorded. The preliminary result on small...
MÖSSBAUER SPECTROSCOPY OF 57Fe IMPLANTED TO ALUMINIUM AT LIQUID NITROGEN TEMPERATURE (1979)
Sassa, K., Ishida, Y., Kaneko, K.
57Fe+ ions were implanted into aluminium in a 38 kV isotope separator at liquid nitrogen temperateure. The ageing behavior of the specimen was examined by conversion election Mössbauer spectroscopy...