Systematic tight-binding analysis of ARPES spectra of transition-metal oxides (2008)
Wadati, H., Chikamatsu, A., Takizawa, M., Kumigashira, H., Yoshida, T., Mizokawa, T., ...
We have performed systematic tight-binding (TB) analyses of the angle-resolved photoemission spectroscopy (ARPES) spectra of transition-metal (TM) oxides A$M$O$_3$ ($M=$ Ti, V, Mn, and Fe) with the...
Ebata, K., Takizawa, M., Fujimori, A., Kuwahara, H., Tomioka, Y., Tokura, Y.
We have studied the effects of band filling and bandwidth control on the chemical potential in perovskite manganites $R_{1-x}A_x$MnO$_3$ ($R$ : rare earth, $A$ : alkaline earth) by measurements of...
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...
Bulk-like d band of SrVO3 under a self-protective cap layer (2008)
Takizawa, M., Minohara, M., Kumigashira, H., Toyota, D., Oshima, M., Wadati, H., ...
We have performed a detailed angel-resolved photoemission spectroscopy study of in-situ prepared SrVO3 thin films. Naturally capped by a ``transparent'' protective layer, contributions from surface...
Song, G. S., Kobayashi, M., Hwang, J. I., Kataoka, T., Takizawa, M., Fujimori, A., ...
The electronic structure of the magnetic semiconductor Ga$_{1-x}$Cr$_{x}$N and the effect of Si doping on it have been investigated by photoemission and soft x-ray absorption spectroscopy. We have...
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...
Hashimoto, M., Yoshida, T., Yagi, H., Takizawa, M., Fujimori, A., Kubota, M., ...
We have performed angle-resolved photoemission and core-level x-ray photoemission studies of the single-layer cuprate Bi$_2$Sr$_{2-x}$La$_x$CuO$_{6+\delta}$ (Bi2201) and revealed the doping evolution...
Effects of electron-phonon coupling in angle-resolved photoemission spectra of SrTiO3 (2007)
Maekawa, K., Takizawa, M., Wadati, H., Yoshida, T., Fujimori, A., Kumigashira, H., ...
We have studied the O 2p valence-band structure of Nb-doped SrTiO3, in which a dilute concentration of electrons are doped into the d0 band insulator, by angle-resolved photoemission spectroscopy...
Kobayashi, M., Hwang, J. I., Song, G. S., Ooki, Y., Takizawa, M., Fujimori, A., ...
The electronic structure of Li-doped Ni$_{1-x}$Fe$_x$O has been investigated using photoemission spectroscopy (PES) and x-ray absorption spectroscopy (XAS). The Ni $2p$ core-level PES and XAS spectra...
Kobayashi, M., Ooki, Y., Takizawa, M., Song, G. S., Fujimori, A., Takeda, Y., ...
By means of photoemission and x-ray absorption spectroscopy, we have studied the electronic structure of (Ni,Zn,Fe,Ti)$_{3}$O$_{4}$ thin films, which exhibits a cluster glass behavior with a...
Ebata, K., Takizawa, M., Maekawa, K., Fujimori, A., Kuwahara, H., Tomioka, Y., ...
We have studied the chemical potential shift as a function of temperature in Nd$_{1-x}$Sr$_x$MnO$_3$ (NSMO) by measurements of core-level photoemission spectra. For ferromagnetic samples ($x=0.4$ and...
Terai, K., Wadati, H., Kobayashi, M., Takizawa, M., Hwang, J. I., ...
Epitaxial Ba0.5Sr0.5TiO3 thin films were prepared on Nb-doped SrTiO3 (100)substrates by the pulsed laser deposition technique, and were studied by measuring the Ti 2p - 3d resonant photoemission...
Photoemission study of TiO2/VO2 interfaces (2006)
Maekawa, K., Takizawa, M., Wadati, H., Yoshida, T., Fujimori, A., Kumigashira, H., ...
We have measured photoemission spectra of two kinds of TiO$_2$-capped VO$_2$ thin films, namely, that with rutile-type TiO$_2$ (r-TiO$_2$/VO$_2$) and that with amorphous TiO$_2$ (a-TiO$_2$/VO$_2$)...
Ebata, K., Wadati, H., Takizawa, M., Fujimori, A., Chikamatsu, A., Kumigashira, H., ...
We have studied the chemical potential shift and changes in the electronic density of states near the Fermi level ($E_F$) as a function of carrier concentration in Pr$_{1-x}$Ca$_x$MnO$_3$ (PCMO, $0.2...
Photoemission from buried interfaces in SrTiO3/LaTiO3 superlattices (2006)
Takizawa, M., Wadati, H., Tanaka, K., Hashimoto, M., Yoshida, T., Fujimori, A., ...
We have measured photoemission spectra of SrTiO3/LaTiO3 superlattices with a topmost SrTiO3 layer of variable thickness. Finite coherent spectral weight with a clear Fermi cut-off was observed at...
Wadati, H., Chikamatsu, A., Takizawa, M., Hashimoto, R., Kumigashira, H., Yoshida, T., ...
We have performed an angle-resolved photoemission spectroscopy study of La$_{0.6}$Sr$_{0.4}$FeO$_3$ using {\it in situ} prepared thin films and determined its band structure. The experimental band...
Valence changes associated with the metal-insulator transition in Bi$_{1-x}$La$_x$NiO$_3$ (2005)
Wadati, H., Takizawa, M., Tran, T. T., Tanaka, K., Mizokawa, T., Fujimori, A., ...
Perovskite-type BiNiO$_3$ is an insulating antiferromagnet in which a charge disproportionation occurs at the Bi site. La substitution for Bi suppresses the charge disproportionation and makes the...
Manifestation of Correlation Effects in the photoemission spectra of Ca$_{1-x}$Sr$_x$RuO$_3$ (2004)
Takizawa, M., Toyota, D., Wadati, H., Chikamatsu, A., Kumigashira, H., Fujimori, A., ...
We have measured soft x-ray photoemission and O 1{\it s} x-ray absorption spectra of Ca$_{1-x}$Sr$_x$RuO$_3$ thin films prepared {\it in situ}. The coherent and incoherent parts have been identified...
Wadati, H., Chikamatsu, A., Hashimoto, R., Takizawa, M., Kumigashira, H., Fujimori, A., ...
We have measured the temperature dependence of the photoemission and x-ray absorption spectra of La$_{1-x}$Sr$_x$FeO$_3$ (LSFO) epitaxial thin films with $x=0.67$, where charge disproportionation...
Ladder Operators for Integrable One-Dimensional Lattice Models (2002)
A generalised ladder operator is used to construct the conserved operators for any model derived from the Yang-Baxter equation. As an example, the low order conserved operators for the XYh model are...
U_A(1) Symmetry Breaking and eta, eta prime mesons in the Bethe-Salpeter Approach (1999)
Naito, K., Nemoto, Y., Takizawa, M., Yoshida, K., Oka, M.
U_A(1) symmetry breaking is studied by introducing the flavor mixing interaction proposed by Kobayashi, Maskawa and 't Hooft. Combining the one gluon exchange interaction, the rainbow like...
Finite Quark Mass Effects in the Improved Ladder Bethe-Salpeter Amplitudes (1998)
Naito, K., Yoshida, K., Nemoto, Y., Oka, M., Takizawa, M.
We study the finite quark mass effects of the low-energy QCD using the improved ladder Schwinger-Dyson and Bethe-Salpeter equations which are derived in the manner consistent with the vector and...
Dynamical Chiral Symmetry Breaking in Effective Models of QCD in the Bethe-Salpeter Approach (1998)
Naito, K., Yoshida, K., Nemoto, Y., Oka, M., Takizawa, M.
Dynamical breaking of chiral symmetry in effective models of QCD is studied. Introducing a cut-off function or a non-local interaction, the Noether current must be modified and thus the...
Strong $U_A(1)$ breaking in radiative $\eta$ decays (1996)
Takizawa, M., Nemoto, Y., Oka, M.
We study the \egg, \egm and \epg decays using an extended three-flavor Nambu-Jona-Lasinio model that includes the 't~Hooft instanton induced interaction. We find that the $\eta$-meson mass, the \egg,...
$\eta$-Meson Decays and Strong $U_A(1)$ Breaking in the Three-Flavor Nambu-Jona-Lasinio Model (1996)
Takizawa, M., Nemoto, Y., Oka, M.
We study the $\eta \to \gamma \gamma$ and $\eta \to \pi^0 \gamma \gamma$ decays using an extended three-flavor Nambu-Jona-Lasinio model that includes the 't~Hooft instanton induced interaction. We...
$\eta \to \pi^0 \gamma \gamma$ decay in the three-flavor Nambu-Jona-Lasinio model (1996)
Nemoto, Y., Oka, M., Takizawa, M.
We study the $\eta \to \pi^0 \gamma \gamma$ decay via the quark-box diagram in the three-flavor Nambu--Jona-Lasinio model that includes the $U_A (1)$ breaking effect. We find that the $\eta$-meson...
Effects of the $U_A(1)$ Anomaly on $\eta \to 2 \gamma$ Decay (1995)
We study the $\eta \to 2 \gamma$ decay using an extended three-flavor Nambu-Jona-Lasinio model that includes the 't~Hooft instanton induced interaction. The $\eta$ meson mass and the $\eta \to 2...
$K \to 2 \pi$ Decay in the Nambu-Jona-Lasinio Model (1995)
Takizawa, M., Inoue, T., Oka, M.
We study the $K \to 2 \pi$ decays using the $U_L(3) \times U_R(3)$ version of the Nambu-Jona-Lasinio model with the effective $\Delta S = 1$ nonleptonic weak interaction. The $\Delta I = {3/2}$...
Near-Bottom Pelagic Bacteria at a Deep-Water Sewage Sludge Disposal Site †
Takizawa, M., Straube, W. L., Hill, R. T., Colwell, R. R.
The epibenthic bacterial community at deep-ocean sewage sludge disposal site DWD-106, located approximately 106 miles (ca. 196 km) off the coast of New Jersey, was assessed for changes associated...
Near-Bottom Pelagic Bacteria at a Deep-Water Sewage Sludge Disposal Site †
Takizawa, M., Straube, W. L., Hill, R. T., Colwell, R. R.
The epibenthic bacterial community at deep-ocean sewage sludge disposal site DWD-106, located approximately 106 miles (ca. 196 km) off the coast of New Jersey, was assessed for changes associated...
Hyaluronan inhibits expression of ADAMTS4 (aggrecanase-1) in human osteoarthritic chondrocytes
Yatabe, T, Mochizuki, S, Takizawa, M, Chijiiwa, M, Okada, A, Kimura, T, ...
Kuramitsu, Y., Nishibe, M., Kobayashi, M., Togashi, Y., Yuan, L., Takizawa, M., ...
Using an under agarose migration (UAM) assay, we studied lymphokine-activated killer (LAK)-attractant activity in cultured conditioned medium of tumour tissues after chemotherapy as a possible...