Hideomi Ishida

  • Citations Per Year
Learn More
A new concept is proposed for the paramagnetic metal insulator transition in the layer perovskite Ca2-xSrxRuO4. Whereas the pure Sr compound is metallic up to large Coulomb energies due to strong orbital fluctuations, structural changes induced by doping with Ca give rise to an interorbital charge transfer which makes the material extremely sensitive to(More)
The molecular aggregation state of octadecylsiloxane monolayers on Si-wafer substrate surfaces prepared from octadecyltrimethoxysilane (OTMS) or octadecyltrichlorosilane (OTS) was investigated on the basis of grazing incidence X-ray diffraction (GIXD), Fourier transform infrared spectroscopy (FT-IR), contact angle measurement, field emission scanning(More)
The study of wafer level hermetic bonding using sub-micron gold particles with the mean diameter of 0.3_m was conducted at bonding temperature of 150 – 300 °C with varying bonding pressure in the range of 50 – 100 MPa. 4.5 mm-square, 10 μm – 100 μm-wide seal line patterns of sub-micron Au particles were formed on Si or glass wafers by means of wafer level(More)
Single crystals of Cu4I4(CH3NHCS)2 and CuI(CH3NHCS)2 polymer complexes have been crystallized. Electrical conductivity and X-ray diffraction measurements have been performed on these compounds. The space group symmetries (monoclinic C2/m and triclinic P-1) and the crystal structures are determined at room temperature. It is suggested from the temperature(More)
We have developed a new scanning electron microscope (SEM) equipped with a Schottky emission (SE) gun that produces a high probe current at an acceleration voltage of less than 5 kV and a cathodoluminescence (CL) spectroscopic system (SE-SEM-CL) equipped with an SE gun and a newly designed parabolic mirror that has a very short working distance of 9 mm in(More)
  • H Ishida
  • Journal of physics. Condensed matter : an…
  • 2017
We calculate the decay length in surface normal direction of the surface-state wave functions on a clean Bi(1 1 1) surface as a function of two-dimensional (2D) wave vector [Formula: see text] along the [Formula: see text] line. For this purpose, we perform a first-principles density functional theory (DFT) calculation for semi-infinite Bi(1 1 1) by(More)
The t(2g) quasiparticle spectra of Na(0.3)CoO(2) are calculated within the dynamical mean field theory. It is shown that as a result of dynamical Coulomb correlations charge is transferred from the nearly filled e(g(')) subbands to the a(1g) band, thereby reducing orbital polarization among Co t(2g) states. Dynamical correlations therefore stabilize the(More)
  • 1