Bulk 5f electronic states in uranium monochalcogenide US (2009)
Takeda, Y., Okane, T., Ohkochi, T., Saitoh, Y., Yamagami, H., Fujimori, A., ...
We have investigated the electronic states of the uranium monochalcogenide US, which is a typical ferromagnetic uranium compound, using soft x-ray photoemission spectroscopy (SX-PES). In early...
Okane, T., Ohkochi, T., Takeda, Y., Yasui, A., Saitoh, Y., ...
Angle-resolved photoelectron spectroscopy in the Ce 3d-4f excitation region was measured for the paramagnetic state of CeRu2Si2, CeRu2(Si0.82Ge0.18)2, and LaRu2Si2 to investigate the changes of the...
Ideta, S., Takashima, K., Hashimoto, M., Yoshida, T., Fujimori, A., Anzai, H., ...
We have investigated the optimally doped tri-layer cuprate Bi$_2$Sr$_2$Ca$_2$Cu$_3$O$_{10+\delta}$ (Bi2223) by angle-resolved photoemission spectroscopy, and observed energy bands and Fermi surfaces...
Wadati, H., Maniwa, A., Chikamatsu, A., Kumigashira, H., Oshima, M., Mizokawa, T., ...
We have investigated the shifts of the core-level photoemission spectra of La$_{0.6}$Sr$_{0.4}$MnO$_3$ thin films grown on three kinds of substrates, SrTiO$_3$,...
Kataoka, T., Kobayashi, M., Sakamoto, Y., Song, G. S., Fujimori, A., ...
We have studied the electronic structure of Zn$_{0.9}$Fe$_{0.1}$O nano-particles, which have been reported to show ferromagnetism at room temperature, by x-ray photoemission spectroscopy (XPS),...
Yoshida, T., Zhou, X. J., Hussain, Z., Fujimori, A., Eisaki, H., ...
We have performed an angle-resolved photoemission study of the two-leg ladder system Sr$_{14-x}$Ca$_x$Cu$_{24}$O$_{41}$ with $x$= 0 and 11. "Underlying Fermi surfaces" determined from low energy...
Ikeda, M., Yoshida, T., Fujimori, A., Kubota, M., Ono, K., Kaga, Y., ...
We have performed an angle-resolved photoemission spectroscopy (ARPES) study of Nd$_{1.85}$Ce$_{0.15}$CuO$_{4}$ (NCCO) in order to elucidate the origin of the high-energy kink (HEK) observed in the...
Yoshida, T., Hashimoto, M., Ideta, S., Fujimori, A., Tanaka, K., Mannella, N., ...
We have investigated the doping and temperature dependences of the pseudogap/superconducting gap in the single-layer cuprate La$_{2-x}$Sr$_x$CuO$_4$ by angle-resolved photoemission spectroscopy. The...
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...
Modulation Doping of a Mott Quantum Well by a Proximate Polar Discontinuity (2008)
Higuchi, T., Hotta, Y., Susaki, T., Fujimori, A., Hwang, H. Y.
We present evidence for hole injection into LaAlO3/LaVO3/LaAlO3 quantum wells near a polar surface of LaAlO3 (001). As the surface is brought in proximity to the LaVO3 layer, an exponential drop in...
Appearance of Universal Metallic Dispersion in a Doped Mott Insulator (2008)
Sahrakorpi, S., Markiewicz, R. S., Lin, Hsin, Lindroos, M., Zhou, X. J., Yoshida, T., ...
We have investigated the dispersion renormalization $Z_{disp}$ in La$_{2-x}$Sr$_x$CuO$_4$ (LSCO) over the wide doping range of $x=0.03-0.30$, for binding energies extending to several hundred meV's....
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...
Effects of out-of-plane disorder on the nodal quasiparticle and superconducting gap in Bi2201 (2008)
Hashimoto, M., Yoshida, T., Fujimori, A., Lu, D. H., Kubota, M., ...
How out-of-plane disorder affects the electronic structure has been investigated for the single-layer cuprates Bi$_2$Sr$_{1.6}$$Ln$$_{0.4}$CuO$_{6+\delta}$ ($Ln$ = La, Nd, Gd) by angle-resolved...
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...
Hashimoto, M., Yoshida, T., Tanaka, K., Fujimori, A., Okusawa, M., Wakimoto, S., ...
From temperature-dependent angle-integrated photoemission studies of hole-doped La$_{2}$CuO$_4$ and subsequent scaling analysis, we have deduced the ``coherence temperature'' $T_{coh}$ above which...
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., 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...
Ikeda, M., Yoshida, T., Fujimori, A., Kubota, M., Ono, K., Das, Hena, ...
We have performed angle-resolved photoemission spectroscopy (ARPES) measurements and first-principles electronic structure calculations on the electron-doped high-Tc superconductors Ln1.85Ce0.15CuO4...
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...
Takeda, Y., Kobayashi, M., Okane, T., Ohkochi, T., Okamoto, J., Saitoh, Y., ...
The magnetic properties of as-grown Ga$_{1-x}$Mn$_{x}$As have been investigated by the systematic measurements of temperature and magnetic field dependent soft x-ray magnetic circular dichroism...
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...
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...
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...
Okamoto, J., Okane, T., Saitoh, Y., Terai, K., Muramatsu, Y., ...
Ca_1-xSr_xRuO_3, which is ferromagnetic for Sr concentration x > 0.3, has been studied by x-ray magnetic circular dichroism (XMCD) in Ru 3p and O 1s core-level x-ray absorption. XMCD signals appear...
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...
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...
Wadati, H., Maniwa, A., Chikamatsu, A., Ohkubo, I., Kumigashira, H., Oshima, M., ...
We have performed an {\it in-situ} photoemission study of Pr_{1-x}Ca_xMnO_3 (PCMO) thin films grown on LaAlO_3 (001) substrates and observed the effect of epitaxial strain on the electronic...
Ebata, K., Hashimoto, M., Tanaka, K., Fujimori, A., Tomioka, Y., Tokura, Y.
We have studied the temperature dependence of the photoemission spectra of Pr$_{1-x}$Ca$_x$MnO$_3$ (PCMO) with $x=0.25$, 0.3 and 0.5. For $x=0.3$ and 0.5, we observed a gap in the low-temperature...
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...
Chikamatsu, A., Wadati, H., Kumigashira, H., Oshima, M., Fujimori, A., Lippmaa, M., ...
We report the first observation of changes in the electronic structure of La$_{1-x}$Sr$_{x}$MnO$_{3}$ (LSMO) across the filling-control metal-insulator (MI) transition by means of in situ...
Electron Doping of Cuprates via Interfaces with Manganites (2007)
Yunoki, S., Moreo, A., Dagotto, E., Okamoto, S., Kancharla, S. S., Fujimori, A.
The electron doping of undoped high-$T_c$ cuprates via the transfer of charge from manganites (or other oxides) using heterostructure geometries is here theoretically discussed. This possibility is...
Hard x-ray photoemission study of LaAlO3/LaVO3 multilayers (2007)
Wadati, H., Hotta, Y., Fujimori, A., Susaki, T., Hwang, H. Y., Takata, Y., ...
We have studied the electronic structure of multilayers composed of a band insulator LaAlO$_3$ (LAO) and a Mott insulator LaVO$_3$ (LVO) by means of hard x-ray photoemission spectroscopy, which has a...
Kobayashi, M., Tanaka, K., Fujimori, A., Ray, Sugata, Sarma, D. D.
With high-resolution photoemission spectroscopy measurements, the density of states (DOS) near the Fermi level ($E_\mathrm{F}$) of double perovskite Sr$_2$FeMoO$_6$ having different degrees of Fe/Mo...
Sarma, DD, Ray, Sugata, Tanaka, K, Kobayashi, M, Fujimori, A, Sanyal, P, ...
We present magnetization (M) and magnetoresistance (MR)data for a series of $Sr_2FeMoO_6$ samples with independent control on antisite defect and grain-boundary densities, which reveal several...
Hwang, J. I., Kobayashi, M., Song, G. S., Fujimori, A., Tanaka, A., Yang, Z. S., ...
We have investigated the magnetic properties of a GaN/Ga1-xMnxN (x = 0.1) digital ferromagnetic heterostructure (DFH) showing ferromagnetic behavior using soft x-ray absorption spectroscopy (XAS) and...
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...
Sarma, DD, Ray, Sugata, Tanaka, K, Kobayashi, M, Fujimori, A, Sanyal, P, ...
We present magnetization (M) and magnetoresistance (MR)data for a series of $Sr_2FeMoO_6$ samples with independent control on antisite defect and grain-boundary densities, which reveal several...
Ikeda, M., Yoshida, T., Fujimori, A., Kubota, M., Ono, K., Unozawa, K., ...
We have performed an angle-resolved photoemission study of the electron-doped high-Tc superconductors (HTSCs) Sm_{1.85}Ce_{0.15}CuO_{4} (SCCO) and Eu_{1.85}Ce_{0.15}CuO_{4} (ECCO). Around the nodal...
The hierarchy of multiple many-body interaction scales in high-temperature superconductors (2006)
Meevasana, W., Zhou, X. J., Sahrakorpi, S., Lee, W. S., Yang, W. L., Tanaka, K., ...
To date, angle-resolved photoemission spectroscopy has been successful in identifying energy scales of the many-body interactions in correlated materials, focused on binding energies of up to a few...
Distinct Fermi-Momentum Dependent Energy Gaps in Deeply Underdoped Bi2212 (2006)
Tanaka, Kiyohisa, Lee, W. S., Lu, D. H., Fujimori, A., Fujii, T., ...
We use angle-resolved photoemission spectroscopy applied to deeply underdoped cuprate superconductors Bi2Sr2(Ca,Y)Cu2O8 (Bi2212) to reveal the presence of two distinct energy gaps exhibiting...
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$_2$)...
Hashimoto, M., Yoshida, T., Tanaka, K., Fujimori, A., Okusawa, M., Wakimoto, S., ...
We have performed a temperature-dependent angle-integrated photoemission study of lightly-doped to heavily-overdoped La$_{2-x}$Sr$_{x}$CuO$_4$ and oxygen-doped La$_2$CuO$_{4.10}$. We found that both...
Yoshida, T., Zhou, X. J., Lu, D. H., Komiya, Seiki, Ando, Yoichi, Eisaki, H., ...
We have performed a systematic angle-resolved photoemission spectroscopy (ARPES) study of the high-Tc cuprates La2-xSrxCuO4, ranging from the underdoped insulator to the superconductor to the...
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...
Electronic structure of the Mott insulator LaVO3 in a quantum well geometry (2006)
Hotta, Y., Wadati, H., Fujimori, A., Susaki, T., Hwang, H. Y.
We used x-ray photoemission spectroscopy to investigate the electronic structure of the Mott insulator LaVO3 embedded in LaAlO3. By limiting the upper layer of LaAlO3 to 3 unit cells, the underlying...
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, $0.2...
Non-local coherent screening in the bandwidth controlled Ca1-xSrxVO3 series (2006)
Mossanek, R. J. O., Abbate, M., Fujimori, A.
We studied the electronic structure of the Ca1-xSrxVO3 series using a cluster model. Both the coherent and incoherent structures in photoemission correspond to well screened states. The coherent...
Ishida, Y., Ohta, H., Hirano, M., Fujimori, A., Hosono, H.
We have performed a depth-profile analysis of an all-oxide p-n junction diode n-ZnO/p-NiO using photoemission spectroscopy combined with Ar-ion sputtering. Systematic core-level shifts were observed...
Photoemission from buried interfaces in SrTiO3/LaTiO3 superlattices (2006)
Takizawa, M., Wadati, H., Tanaka, K., Hashimoto, M., Yoshida, T., Fujimori, A., ...
We have measured photoemission spectra of SrTiO3/LaTiO3 superlattices with a topmost SrTiO3 layer of variable thickness. Finite coherent spectral weight with a clear Fermi cut-off was observed at...
Wadati, H., Yoshida, T., Chikamatsu, A., Kumigashira, H., Oshima, M., Eisaki, H., ...
Nowadays it has become feasible to perform angle-resolved photoemission spectroscopy (ARPES) measurements of transition-metal oxides with three-dimensional perovskite structures owing to the...
Wadati, H., Chikamatsu, A., Takizawa, M., Hashimoto, R., Kumigashira, H., Yoshida, T., ...
We have performed an angle-resolved photoemission spectroscopy study of La$_{0.6}$Sr$_{0.4}$FeO$_3$ using {\it in situ} prepared thin films and determined its band structure. The experimental band...
Okamoto, J., Okane, T., Fujimori, A., Abbate, M., Yoshii, S., ...
We have performed photoemission and soft x-ray absorption studies of pyrochlore-type Ru oxides, namely, the filling-control system Sm$_{2-x}$Ca$_x$Ru$_2$O$_7$ and the bandwidth-control system...
Mamiya, K., Koide, T., Fujimori, A., Tokano, H., Manaka, H., Tanaka, A., ...
Soft x-ray magnetic circular dichroism (XMCD) measurements at the Co L2,3 edges of Co doped rutile TiO2 at room temperature have revealed clear multiplet features characteristic of ferromagnetic Co2+...
Yamasaki, T., Yamazaki, K., Ino, A., Arita, M., Namatame, H., Taniguchi, M., ...
Nodal quasiparticles of Bi2Sr2CaCu2O8 have been studied by angle-resolved photoemission spectroscopy with high momentum and energy resolution. Low-energy tunable photons have enabled us to resolve a...
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...
Orbital ordering in La$_{0.5}$Sr$_{1.5}$MnO$_4$ studied by model Hartree-Fock calculation (2005)
Ebata, K., Mizokawa, T., Fujimori, A.
We have investigated orbital ordering in the half-doped manganite La$_{0.5}$Sr$_{1.5}$MnO$_4$, which displays spin, charge and orbital ordering, by means of unrestricted Hartree-Fock calculations on...
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...
Doping Evolution of the Underlying Fermi Surface in La2-xSrxCuO4 (2005)
Yoshida, T., Zhou, X. J., Tanaka, K., Yang, W. L., Hussain, Z., ...
We have performed a systematic doping dependent study of La$_{2-x}$Sr$_x$CuO$_4$ (LSCO) (0.03$\leq x \leq$0.3) by angle-resolved photoemission spectroscopy. In the entire doping range, the underlying...
Robust Ti4+ states in SrTiO3 layers of La0.6Sr0.4MnO3/SrTiO3/ La0.6Sr0.4MnO3 junctions (2005)
Kumigashira, H., Chikamatsu, A., Hashimoto, R., Oshima, M., Ohnishi, T., Lippmaa, M., ...
We have investigated the interfacial electronic structure of La0.6Sr0.4MnO3 (LSMO)/ SrTiO3 (STO)/ LSMO heterojunctions utilizing the elemental selectivity of photoemission spectroscopy. The Ti 2p...
Ghosh, Shankar, Kamaraju, N, Seto, M, Fujimori, A, Takeda, Y, Ishiwata, S, ...
Temperature-dependent micro-Raman studies of orthorhombic $CaFeO_{3}$ and rhombohedral $La_{0.33}Sr_{0.67}FeO_{3}$ were carried out with an aim to study the role of a lattice in the formation of the...
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...
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...
Polaronic behavior of undoped high-Tc cuprates (2005)
Rösch, O., Gunnarsson, O., Zhou, X. J., Yoshida, T., Sasagawa, T., Fujimori, A., ...
We present angle-resolved photoemission spectroscopy (ARPES) data on undoped La2CuO4, indicating polaronic coupling between bosons and charge carriers. Using a shell model, we calculate the...
Yoshida, T., Tanaka, K., Yagi, H., Ino, A., Eisaki, H., Fujimori, A., ...
We have performed an angle-resolved photoemission study of the three-dimensional perovskite-type SrVO$_3$. Observed spectral weight distribution of the coherent part in the momentum space 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...
Chikamatsu, A., Wadati, H., Kumigashira, H., Oshima, M., Fujimori, A., Hamada, N., ...
We have performed an in situ angle-resolved photoemission spectroscopy (ARPES) on single-crystal surfaces of La$_{0.6}$Sr$_{0.4}$MnO$_{3}$ (LSMO) thin films grown on SrTiO$_{3}$ (001) substrates by...
Ghosh, Shankar, Kamaraju, N, Seto, M, Fujimori, A, Takeda, Y, Ishiwata, S, ...
Temperature-dependent micro-Raman studies of orthorhombic $CaFeO_{3}$ and rhombohedral $La_{0.33}Sr_{0.67}FeO_{3}$ were carried out with an aim to study the role of a lattice in the formation of the...
Spin-polarized surface state of MnSb(0001) (2005)
Rader, O., Lezaic, M., Blügel, S., Fujimori, A., Kimura, A., Kamakura, N., ...
This version is available at the following Publisher URL: http://stacks.iop.org/1367-2630/7/111
Fujimori, A., Ikeda, Y., Okano, R., Hiraki, M., Boger, P., ...
This study relates to the modification of 2-benzylamino-4-methyl-6-trifluoromethyl-1,3,5-triazine. New 1,3,5-triazine compounds with an electron-withdrawing carboxyl group, e.g. ester group,...
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...
Direct observation of electronic domains in manganites by spatially resolved spectroscopy (2004)
Sarma, D. D., Topwal, Dinesh, Manju, U., Krishnakumar, S. R., Bertolo, M., La Rosa, S., ...
We use a spatially resolved, direct spectroscopic probe for electronic structure with an additional sensitivity to chemical compositions to investigate high-quality single crystal samples of...
Orbital Symmetry and Electron Correlation in Na_{x}CoO_2 (2004)
Wu, W. B., Huang, D. J., Okamoto, J., Tanaka, A., Chou, F. C., ...
Measurements of polarization-dependent soft x-ray absorption reveal that the electronic states determining the low-energy excitations of Na$_{x}$CoO$_2$ have predominantly $a_{1g}$ symmetry with...
Direct observation of large electronic domains with memory effect in doped manganites (2004)
Sarma, DD, Topwal, Dinesh, Manju, U, Krishnakumar, SR, Bertolo, M, Rosa, La S, ...
We use a spatially resolved, direct spectroscopic probe for electronic structure with an additional sensitivity to chemical compositions to investigate high-quality single crystal samples of...
Ino, A., Okane, T., Fujimori, A., Mizokawa, T., Yasui, Y., ...
The filling-controlled metal-insulator transition (MIT) in a two-dimensional Mott-Hubbard system La1.17-xPbxVS3.17 has been studied by photoemission spectroscopy. With Pb substitution x, chemical...
Multiple Bosonic Mode Coupling in Electron Self-Energy of (La_2-xSr_x)CuO_4 (2004)
Zhou, X. J., Shi, Junren, Yoshida, T., Cuk, T., Yang, W. L., Brouet, V., ...
High resolution angle-resolved photoemission spectroscopy data along the (0,0)-($\pi$,$\pi$) nodal direction with significantly improved statistics reveal fine structure in the electron self-energy...
Wadati, H., Kobayashi, D., Kumigashira, H., Okazaki, K., Mizokawa, T., Fujimori, A., ...
We have studied the electronic structure of epitaxially grown thin films of La$_{1-x}$Sr$_x$FeO$_3$ by {\it in-situ} photoemission spectroscopy (PES) and x-ray absorption spectroscopy (XAS)...
Zhou, X. J., Yoshida, T., Yang, W. L., Brouet, V., Zhou, F., ...
High resolution angle-resolved photoemission measurements on underdoped (La$_{2-x}$Sr$_x$)CuO$_4$ system show that, at energies below 70 meV, the quasiparticle peak is well defined around the...
Thermodynamic and transport properties of underdoped cuprates from ARPES data (2004)
Yoshida, T., Zhou, X. J., Yagi, H., Lu, D. H., Tanaka, K., Fujimori, A., ...
he relationship between photoemission spectra of high-$T_{\textrm{c}}$ cuprates and their thermodynamic and transport properties are discussed. The doping dependence of the expected quasi-particle...
Direct observation of large electronic domains with memory effect in doped manganites (2004)
Sarma, DD, Topwal, Dinesh, Manju, U, Krishnakumar, SR, Bertolo, M, Rosa, La S, ...
We use a spatially resolved, direct spectroscopic probe for electronic structure with an additional sensitivity to chemical compositions to investigate high-quality single crystal samples of...
Nature of Orbital Ordering in La_0.5Sr_1.5MnO_4 is Studied by Soft X-ray Linear Dichroism (2003)
Huang, D. J., Wu, W. B., Guo, G. Y., Lin, H-J, Hou, T. Y., Chang, C. F., ...
We found that the conventional model of orbital ordering of 3x^2-r^2/3y^2-r^2 type in the eg states of La_0.5Sr_1.5MnO_4 is incompatible with measurements of linear dichroism in the Mn 2p-edge x-ray...
Effects of next-nearest-neighbor hopping $t^{\prime}$ on the electronic structure of cuprates (2003)
Tanaka, K., Yoshida, T., Fujimori, A., Lu, D. H., ...
Photoemission spectra of underdoped and lightly-doped Bi$_{2-z}$Pb$_z$Sr$_2$Ca$_{1-x}${\it R}$_{x}$Cu$_2$O$_{8+y}$ ($R=$ Pr, Er) (BSCCO) have been measured and compared with those of...
Fully Gapped Single-Particle Excitations in the Lightly Doped Cuprates (2003)
Shen, K. M., Yoshida, T., Lu, D. H., Ronning, F., Armitage, N. P., Lee, W. S., ...
The low-energy excitations of the lightly doped cuprates were studied by angle-resolved photoemission spectroscopy. A finite gap was measured over the entire Brillouin zone, including along the...
Okazaki, K., Wadati, H., Fujimori, A., Onoda, M., Muraoka, Y., Hiroi, Z.
We have made a detailed temperature-dependent photoemission study of VO_2/TiO_2(001) thin films, which show a metal-insulator transition at \sim 300 K. Clean surfaces were obtained by annealing the...
On the origin of magnetoresistance in Sr$_2$FeMoO$_6$ (2003)
Sarma, D. D., Ray, Sugata, Tanaka, K., Fujimori, A.
We report detailed magnetization ($M$) and magnetoresistance ($MR$) studies on a series of Sr$_2$FeMoO$_6$ samples with independent control on anti-site defect and grain boundary densities. These...
On the origin of magnetoresistance in $Sr_2FeMoO_6$ (2003)
Sarma, DD, Ray, Sugata, Tanaka, K, Fujimori, A
We report detailed magnetization ($M$) and magnetoresistance ($MR$) studies on a series of $Sr_2FeMoO_6$ samples with independent control on anti-site defect and grain boundary densities. These...
In situ Photoemission Study of the Room Temperature Ferromagnet ZnGeP2-Mn (2003)
Ishida, Y, Sarma, DD, Okazaki, K, Okabayashi, J, Hwang, JI, Ott, H, ...
The chemical states of the ZnGeP2:Mn interface which shows ferromagnetism above room temperature have been studied by photoemission spectroscopy. Mn deposition on the ZnGeP2 substrate heated to...
Okazaki, K., Fujimori, A., Yamauchi, T., Ueda, Y.
We have studied the electronic structure of $\beta$-Na$_{0.33}$V$_2$O$_5$, which becomes a superconductor under pressure, by angle-resolved photoemission spectroscopy. Clear band dispersions is...
Metal-insulator Crossover Behavior at the Surface of NiS_2 (2003)
Sarma, D. D., Krishnakumar, S. R., Weschke, E., Schussler-Langeheine, C., Mazumdar, Chandan, Kilian, L., ...
We have performed a detailed high-resolution electron spectroscopic investigation of NiS$_2$ and related Se-substituted compounds NiS$_{2-x}$Se$_x$, which are known to be gapped insulators in the...
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...
Metal-insulator crossover behavior at the surface of $NiS_2$ (2003)
Sarma, DD, Krishnakumar, SR, Weschke, E, Schubler-Langeheine, C, Mazumdar, Chandan, Kilian, L, ...
We have performed a detailed high-resolution electron spectroscopic investigation of $NiS_2$ and related Se-substituted compounds, $NiS_{2-x}Se_x$, which are known to be gapped insulators in the bulk...
Metal-insulator crossover behavior at the surface of $NiS_2$ (2003)
Sarma, DD, Krishnakumar, SR, Weschke, E, Schubler-Langeheine, C, Mazumdar, Chandan, Kilian, L, ...
We have performed a detailed high-resolution electron spectroscopic investigation of $NiS_2$ and related Se-substituted compounds, $NiS_{2-x}Se_x$, which are known to be gapped insulators in the bulk...
On the origin of magnetoresistance in $Sr_2FeMoO_6$ (2003)
Sarma, DD, Ray, Sugata, Tanaka, K, Fujimori, A
We report detailed magnetization ($M$) and magnetoresistance ($MR$) studies on a series of $Sr_2FeMoO_6$ samples with independent control on anti-site defect and grain boundary densities. These...
Universal nodal Fermi velocity (2003)
Zhou, X. J., Yoshida, T., Lanzara, A., Bogdanov, P. V., Kellar, S. A., Shen, K. M., ...
Different routes to charge disproportionation in perovskites-type Fe oxides (2002)
Matsuno, J., Mizokawa, T., Fujimori, A., Takeda, Y., Kawasaki, S., Takano, M.
Iron perovskites CaFeO_3 and La_{0.33}Sr_{0.67}FeO_3 show charge disproportionation, resulting in charge-ordered states with Fe^{3+}:Fe^{5+} =1:1 and =2:1, respectively. We have made photoemission...
Nodal metallic behavior of lightly-doped La$_{2-x}$Sr$_x$CuO$_4$ (2002)
Yoshida, T., Zhou, X. J., Sasagawa, T., Yang, W. L., Bogdanov, P. V., Lanzara, A., ...
Lightly-doped La$_{2-x}$Sr$_x$CuO$_4$ in the so-called "insulating" spin-glass/diagonal-stripe phase has been studied by angle-resolved photoemission spectroscopy. A quasi-particle (QP) peak crossing...
Matsuno, J., Fujimori, A., Takeda, Y., Takano, M.
We have studied the chemical potential shift in La(1-x)Sr(x)MnO(3) as a function of doped hole concentration by core-level x-ray photoemission. The shift is monotonous, which means that there is no...
Crossover in the nature of the metallic phases in the perovskite-type RNiO_3 (2002)
Okazaki, K., Mizokawa, T., Fujimori, A., Sampathkumaran, E. V., Martinez-Lope, M. J., Alonso, J. A.
We have measured the photoemission spectra of Nd$_{1-x}$Sm$_{x}$NiO$_{3}$, where the metal-insulator transition and the N\'{e}el ordering occur at the same temperature for $x \lesssim 0.4$ and the...
Harima, N., Fujimori, A., Sugaya, T., Terasaki, I.
We have studied the chemical potential shift in the high-temperature superconductor Bi$_2$Sr$_2$Ca$_{1-x}${\it R}$_{x}$Cu$_2$O$_{8+y}$ ({\it R} = Pr, Er), where the hole concentration is varied from...
Okabayashi, J., Mizokawa, T., Sarma, D. D., Fujimori, A., Slupinski, T., Oiwa, A., ...
We have investigated the electronic structure of the $p$-type diluted magnetic semiconductor In$_{1-x}$Mn$_x$As by photoemission spectroscopy. The Mn 3$d$ partial density of states is found to be...
Harima, N., Matsuno, J., Fujimori, A., Onose, Y., Taguchi, Y., Tokura, Y.
We have studied the chemical potential shift in the electron-doped superconductor Nd$_{2-x}$Ce$_{x}$CuO$_{4}$ by precise measurements of core-level photoemission spectra. The result shows that the...
Photoemission study of the skutterudite compounds Co(Sb$_{1-x}$Te$_{x}$)$_3$ and RhSb$_3$ (2001)
Ishii, H., Okazaki, K., Fujimori, A., Nagamoto, Y., Koyanagi, T., Sofo, J. O.
We have studied the electronic structure of the skutterudite compounds Co(Sb$_{1-x}$Te$_{x}$)$_3$ (x= 0, 0.02, 0.04) by photoemission spectroscopy. Valence-band spectra revealed that Sb 5p states are...
Evidence for ubiquitous strong electron-phonon coupling in high-temperature superconductors (2001)
Lanzara, A., Bogdanov, P. V., Zhou, X. J., Kellar, S. A., Feng, D. L., Lu, E. D., ...
Coupling between electrons and phonons (lattice vibrations) drives the formation of the electron pairs responsible for conventional superconductivity. The lack of direct evidence for electron-phonon...
Electron-like Fermi surface and Remnant (pi,0) features in overdoped La(1.78)Sr(0.22)CuO4 (2001)
Yoshida, T., Zhou, X.J., Nakamura, M., Kellar, S.A., Bogdanov, P.V., Lu, E.D., ...
We have performed an angle-resolved photoemission study of overdoped La1.78Sr0.22CuO4, and have observed sharp nodal quasiparticle peaks in the second Brillouin zone that are comparable to data from...
Fermi surface, pseudogaps and dynamical stripes in La2-xSrxCuO4 (2000)
Fujimori, A., Ino, A., Yoshida, T., Mizokawa, T., Kim, C., ...
Doping dependence of the electronic structure of La$_{2-x}$Sr$_x$CuO$_4$ (LSCO) has been systematically studied in a series of photoemission measurements. The unusual spectral features in the...
Kobayashi, K., Fujimori, A., Ohtani, T., Dasgupta, I., Jepsen, O., Andersen, O. K.
We have studied the electronic structure of two Chevrel-phase compounds, Mo$_6$Se$_{7.5}$ and Sn$_{1.2}$Mo$_6$Se$_{7.5}$, by combining photoemission spectroscopy and band-structure calculations....
Electron-Like Fermi Surface and Remnant (pi,0) Feature in Overdoped La1.78Sr0.22CuO4 (2000)
Yoshida, T., Zhou, X. J., Nakamura, M., Kellar, S. A., Bogdanov, P. V., Lu, E. D., ...
We have performed an angle-resolved photoemission study of overdoped La1.78Sr0.22CuO4, and have observed sharp nodal quasiparticle peaks in the second Brillouin zone that are comparable to data from...
Mizokawa, T., Kim, C., Ino, A., Yoshida, T., Fujimori, A., ...
We compare the angle-resolved photoemission spectra of the hole-doped Cu-O chains in PrBa$_2$Cu$_3$O$_7$ (Pr123) and in PrBa$_2$Cu$_4$O$_8$ (Pr124). While, in Pr123, a dispersive feature from the...
Lee, J. D., Mizokawa, T., Fujimori, A.
Photoemission in the system of linear charged chains has been studied with the dipole matrix incorporated, from which its dependencies on the photoelectron momentum (${\bf k}$), photon polarization...
Electronic structure of the strongly hybridized ferromagnet CeFe2 (2000)
Konishi, T., Morikawa, K., Kobayashi, K., Mizokawa, T., Fujimori, A., Mamiya, K., ...
We report on results from high-energy spectroscopic measurements on CeFe2, a system of particular interest due to its anomalous ferromagnetism with an unusually low Curie temperature and small...
Dual Nature of the Electronic Structure of the Stripe Phase (2000)
Zhou, X. J., Yoshida, T., Kellar, S. A., Bogdanov, P. V., Lu, E. D., Lanzara, A., ...
High resolution angle-resolved photoemission measurements have been carried out on (La_1.4-xNd_0.6Sr_x)CuO_4, a model system with static stripes, and (La_1.85Sr_0.15)CuO_4, a high temperature...
Ino, A., Kim, C., Nakamura, M., Yoshida, T., Mizokawa, T., Fujimori, A., ...
The electronic structure of the La$_{2-x}$Sr$_x$CuO$_4$ (LSCO) system has been studied by angle-resolved photoemission spectroscopy (ARPES). We report on the evolution of the Fermi surface, the...
Electronic structure of the strongly hybridized ferromagnet CeFe_2 (2000)
Konishi,T., Morikawa,K., Kobayashi,K., Mizokawa,T., Fujimori,A., Mamiya,K., ...
Electronic structure of the strongly hybridized ferromagnet CeFe_2 (2000)
Konishi, T., Morikawa, K., Kobayashi, K., Mizokawa, T., Fujimori, A., Mamiya, K., ...
Yoshida, T., Ino, A., Mizokawa, T., Fujimori, A., Taguchi, Y., Katsufuji, T., ...
We have performed a photoemission study of La$_{1-x}$Sr$_x$TiO$_{3+y/2}$ near the filling-control metal-insulator transition (MIT) as a function of hole doping. Mass renormalization deduced from the...
Kobayashi, K., Susaki, T., Fujimori, A., Tonogai, T., Takagi, H.
We have performed a photoemission study of Ti$_{4}$O$_{7}$ around its two transition temperatures so as to cover the metallic, high-temperature insulating (bipolaron-liquid), and low-temperature...
Satake, M., Kobayashi, K., Mizokawa, T., Fujimori, A., Tanabe, T., Katsufuji, T., ...
We have studied the chemical potential shift in La$_{2-x}$Sr$_x$NiO$_4$ and the charge ordering transition in La$_{1.67}$Sr$_{0.33}$NiO$_4$ by photoemission spectroscopy. The result shows a large...
Mizokawa, T., Kim, C., Ino, A., Fujimori, A., Goto, M., ...
We have performed an angle-resolved photoemission study on untwinned PrBa$_2$Cu$_3$O$_7$, which has low resistivity but does not show superconductivity. We have observed a dispersive feature with a...
Kobayashi, K., Mizokawa, T., Ino, A., Matsuno, J., Fujimori, A., Samata, H., ...
We have performed x-ray-absorption spectroscopy (XAS) and x-ray-photoemission spectroscopy ~XPS! studies of single crystal Ba12xKxBiO3 (BKBO) covering the whole composition range 0
Electronic structure of spinel-type LiV_2O_4 (1999)
Matsuno, J., Fujimori, A., Mattheiss, L. F.
The band structure of the cubic spinel compound LiV_2O_4, which has been reported recently to show heavy Fermion behavior, has been calculated within the local-density approximation using a...
Kobayashi, K., Mizokawa, T., Ino, A., Matsuno, J., Fujimori, A., Samata, H., ...
We have performed x-ray absorption spectroscopy (XAS) and x-ray photoemission spectroscopy (XPS) studies of single crystal Ba_{1-x}K_{x}BiO_{3} (BKBO) covering the whole composition range $0 \leq x...
Ino, A., Kim, C., Nakamura, M., Yoshida, T., Mizokawa, T., ...
We report on the result of angle-resolved photoemission (ARPES) study of La$_{2-x}$Sr$_x$CuO$_4$ (LSCO) from an optimally doped superconductor ($x=0.15$) to an antiferromagnetic insulator ($x=0$)....
Fermi Surface and Band Dispersion in La2-xSrxCuO4 (1998)
Ino, A., Kim, C., Mizokawa, T., Fujimori, A., Takaba, M., ...
Using angle-resolved photoemission spectroscopy (ARPES), we have observed the band structure, Fermi surface and their doping dependences in La2-xSrxCuO4. The results reveal that the Fermi surface...
Kobayashi, K., Mizokawa, T., Fujimori, A., Isobe, M., Ueda, Y., Tohyama, T., ...
We have made an angle-resolved photoemission study of a one-dimensional (1D) Mott-Hubbard insulator Na_{0.96}V_{2}O_{5} and found that the spectra of the V 3d lower Hubbard band are strongly...
Doping Dependent Density of States and Pseudogap Behavior in La2-xSrxCuO4 (1998)
Ino, A., Mizokawa, T., Kobayashi, K., Fujimori, A., Sasagawa, T., Kimura, T., ...
We have made a high-resolution photoemission study of La2-xSrxCuO4 in a wide hole concentration (x) range from a heavily overdoped metal to an undoped insulator. As x decreases, the spectral density...
Correlation satellite driven by reduced dimensionality (1997)
Rader, O, Vescovo, E, Wuttig, M, Sarma, DD, Blugel, S, Himpsel, FJ, ...
Photoelectron spectra of the ordered surface alloy c(2 x 2) CuMn/Cu(100) show distinct valence band spectral features at higher binding energy, which are most pronounced for the optimal CuMn c(2 x 2)...
Electronic structure of one-dimensional cuprate, $Sr_2$$CuO_3$ (1997)
Maiti, K, Sarma, DD, Mizokawa, T, Fujimori, A
We investigate the electronic structure of the antiferromagnetic insulator Sr2CuO3 combining photoemission measurements and various calculations. The results suggest that the charge transfer energy,...
Temperature-dependent photoemission spectral weight in $La_{0.6}Sr_{0.4}MnO_3$ (1996)
Sarma, DD, Shanthi, N, Krishnakumar, SR, Saitoh, T, Mizokawa, T, Sekiyama, A, ...
We report temperature-dependent redistribution of spectral weight in photoemission spectra of $La_{0.6}Sr_{0.4}MnO_3$ over a wide energy range of several eV. We attribute this to a change in the...
Temperature-dependent photoemission spectral weight in $La_{0.6}Sr_{0.4}MnO_3$ (1996)
Sarma, DD, Shanthi, N, Krishnakumar, SR, Saitoh, T, Mizokawa, T, Sekiyama, A, ...
We report temperature-dependent redistribution of spectral weight in photoemission spectra of $La_{0.6}Sr_{0.4}MnO_3$ over a wide energy range of several eV. We attribute this to a change in the...
Pondarré, C, Strumberg, D, Fujimori, A, Torres-León, R, Pommier, Y
Camptothecin (CPT) is a specific topoisomerase I (top1) poison which traps top1 cleavable complexes; e.g. top1-linked DNA single-strand breaks with 5'-hydroxyl and 3'-top1 linked termini. CPT is also...
Pondarré, C, Strumberg, D, Fujimori, A, Torres-León, R, Pommier, Y
Camptothecin (CPT) is a specific topoisomerase I (top1) poison which traps top1 cleavable complexes; e.g. top1-linked DNA single-strand breaks with 5'-hydroxyl and 3'-top1 linked termini. CPT is also...