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Publications (35)

cond-mat.str-el2009

Fermi surfaces, electron-hole asymmetry and correlation kink in a three-dimensional Fermi liquid LaNiO $_{3}$

R. Eguchi, A. Chainani, M. Taguchi +6

We report the three-dimensional (3-D) momentum-resolved soft x-ray photoemission spectroscopy of the Fermi liquid LaNiO $_{3}$ . The out-of-plane and in-plane cuts of the 3-D electron-…

physics.ins-det2011

The T2K Experiment

T2K Collaboration, K. Abe, N. Abgrall +520

The T2K experiment is a long-baseline neutrino oscillation experiment. Its main goal is to measure the last unknown lepton sector mixing angle Î¸_{13} by observing Î½_e appearance…

cond-mat.str-el2010

Weak itinerant ferromagnetism in Heusler type Fe2VAl0.95

K. Sato, T. Naka, M. Taguchi +7

We report measurements of the magnetic, transport and thermal properties of the Heusler type compound Fe2VAl0.95. We show that while stoichiometric Fe2VAl is a non-magnetic semi-me…

cond-mat.supr-con2005

Evidence for suppressed metallicity on the surface of La2-xSrxCuO4 and Nd2-xCexCuO4

M. Taguchi, A. Chainani, K. Horiba +19

Hard X-ray Photoemission spectroscopy (PES) of copper core electronic states, with a probing depth of $\sim$ 60 Ã , is used to show that the Zhang-Rice singlet feature is present in…

physics.ins-det2011

Measurements of the T2K neutrino beam properties using the INGRID on-axis near detector

K. Abe, N. Abgrall, Y. Ajima +428

Precise measurement of neutrino beam direction and intensity was achieved based on a new concept with modularized neutrino detectors. INGRID (Interactive Neutrino GRID) is an on-ax…

physics.ins-det2006

Development of Multi-Pixel Photon Counters

M. Yokoyama, T. Nobuhara, M. Taguchi +12

The multi-pixel photon counter (MPPC) is a newly developed photodetector with an excellent photon counting capability. It also has many attractive features such as small size, high…

cond-mat.str-el2008

Combining photoemission and optical spectroscopies for reliable valence determination in YbS and Yb metal

M. Matsunami, A. Chainani, M. Taguchi +13

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 spec…

cond-mat.str-el2023

Oxygen on-site Coulomb energy in Pr $_{1.3 - x}$ La $_{0.7}$ Ce $_{x}$ CuO $_{4}$ and Bi $_{2}$ Sr $_{2}$ CaCu $_{2}$ O $_{8 + I^´}$ and its relation with Heisenberg exchange

A. Chainani, M. Horio, C. -M. Cheng +20

We study the electronic structure of electron-doped Pr $_{1.3 - x}$ La $_{0.7}$ Ce $_{x}$ CuO $_{4}$ (PLCCO ; $T_{c}$ = 27 K, x = 0.1) and hole-doped Bi $_{2}$ Sr $_{2}$ CaCu $_{2}$ O $_{8 + I^´}$ (Bi2212…

cond-mat.str-el2010

Strong valence fluctuation in the quantum critical heavy fermion superconductor beta-YbAlB4: A hard x-ray photoemission study

M. Okawa, M. Matsunami, K. Ishizaka +12

Electronic structures of the quantum critical superconductor beta-YbAlB4 and its polymorph alpha-YbAlB4 are investigated by using bulk-sensitive hard x-ray photoemission spectrosco…

hep-ex2012

First Muon-Neutrino Disappearance Study with an Off-Axis Beam

T2K Collaboration, K. Abe, N. Abgrall +443

We report a measurement of muon-neutrino disappearance in the T2K experiment. The 295-km muon-neutrino beam from Tokai to Kamioka is the first implementation of the off-axis techni…

cond-mat.str-el2015

Temperature-Dependence of Magnetically-Active Charge Excitations in Magnetite across the Verwey Transition

M. Taguchi, A. Chainani, S. Ueda +16

We have studied the electronic structure of bulk single crystals and epitaxial films of magnetite Fe $_{3}$ O $_{4}$ . Fe $2 p$ core-level spectra show clear differences between hard x-ray…

cond-mat.str-el2017

Unusual coexistence of negative/positive charge-transfer in mixed-valence Na $_{x}$ Ca $_{1 - x}$ Cr $_{2}$ O $_{4}$

M. Taguchi, H. Yamaoka, Y. Yamamoto +6

We have investigated the electronic structure of Na $_{x}$ Ca $_{1 - x}$ Cr $_{2}$ O $_{4}$ using x-ray absorption spectroscopy together with Anderson impurity model calculations with full multip…

cond-mat.str-el2006

Evidence for mass renormalization in LaNiO$"" sub 3_: an in situ soft x-ray photoemission study of epitaxial films

K. Horiba, R. Eguchi, M. Taguchi +5

We investigate the electronic structure of high-quality single-crystal LaNiO $_{3}$ (LNO) thin films using in situ photoemission spectroscopy (PES). The in situ high-resolution soft x…

cond-mat.str-el2006

Electronic structure of semiconducting CeFe $_{4}$ P $_{12}$ : Strong hybridization and relevance of single-impurity Anderson model

M. Matsunami, K. Horiba, M. Taguchi +16

Semiconducting skutterudite CeFe $_{4}$ P $_{12}$ is investigated by synchrotron x-ray photoemission spectroscopy (PES) and x-ray absorption spectroscopy (XAS). Ce 3 $d$ core-level PES a…

cond-mat.str-el2017

Tensile-Strain Dependent Spin States in Epitaxial LaCoO $_{3}$ Thin Films

Y. Yokoyama, Y. Yamasaki, M. Taguchi +11

The spin states of Co $^{3 +}$ ions in perovskite-type LaCoO $_{3}$ , governed by complex interplay between the electron-lattice interactions and the strong electron correlations, still…

cond-mat.str-el2010

Evidence for a correlated insulator to antiferromagnetic metal transition in CrN

P. A. Bhobe, A. Chainani, M. Taguchi +15

We investigate the electronic structure of Chromium Nitride (CrN) across the first-order magneto-structural transition at T_N ~ 286 K. Resonant photoemission spectroscopy shows a g…

cond-mat.mtrl-sci2004

Bulk Electronic structure of Na $_{0.35}$ CoO $_{2}$ .1.3H $_{2}$ O

A. Chainani, T. Yokoya, Y. Takata +18

High-energy (h $I^½$ = 5.95 keV) synchrotron Photoemission spectroscopy (PES) is used to study bulk electronic structure of Na $_{0.35}$ CoO $_{2}$ .1.3H $_{2}$ O, the layered superconduct…

astro-ph.EP2019

Global structure of thermal tides in the upper cloud layer of Venus revealed by LIR onboard Akatsuki

T. Kouyama, M. Taguchi, T. Fukuhara +11

Longwave Infrared Camera (LIR) onboard Akatsuki first revealed the global structure of the thermal tides in the upper cloud layer of Venus. The data were acquired over three Venusi…

cond-mat.str-el2009

Anomalous State Sandwiched between Fermi Liquid and Charge Ordered Mott-Insulating Phases of Ti4O7

M. Taguchi, A. Chainani, M. Matsunami +15

The Magneli phase Ti4O7 exhibits two sharp jumps in resistivity with coupled structural transitions as a function of temperature at Tc1=142 K and Tc2=154 K. We have studied electro…

cond-mat.str-el2012

Photoemission Evidence for Valence Fluctuations and Kondo Resonance in YbAl2

M. Matsunami, A. Chainani, M. Taguchi +9

We use hard x-ray photoemission spectroscopy (HAXPES) to investigate the electronic structure of YbAl2, for which the Yb valence has not been consistently reported to date. The bul…

cond-mat.str-el2007

Coherent and Incoherent States of Electron-doped SrTiO3

Y. Ishida, R. Eguchi, M. Matsunami +7

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 t…

cond-mat.str-el2004

Nature of Well-Screened State in Hard X-ray Mn 2 $p$ Core-Level Photoemission of La $_{1 - x}$ Sr $_{x}$ MnO $_{3}$ Films

K. Horiba, M. Taguchi, A. Chainani +17

Using hard x-ray (HX ; $h I^½$ = 5.95 keV) synchrotron photoemission spectroscopy (PES), we study the intrinsic electronic structure of La $_{1 - x}$ Sr $_{x}$ MnO $_{3}$ (LSMO) thin films. Com…

cond-mat.str-el2005

Theoretical study of resonant x-ray emission spectroscopy of Mn films on Ag

M. Taguchi, P. Kruger, J. C. Parlebas +1

We report a theoretical study on resonant x-ray emission spectra (RXES) in the whole energy region of the Mn $L_{2, 3}$ white lines for three prototypical Mn/Ag(001) systems: (i) a…

cond-mat.str-el2008

Revisiting the valence-band and core-level photoemission spectra of NiO

M. Taguchi, M. Matsunami, Y. Ishida +10

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 lo…

cond-mat.str-el2006

Hard X-ray Cu $2 p$ Core-Level Photoemission of High- $T_{c}$ Cuprate Superconductors

M. Taguchi, M. Matsunami, A. Chainani +17

We have performed a detailed study of Cu $2 p$ core-level spectra in single layer La $_{2 - x}$ Sr $_{x}$ CuO $_{4}$ , La doped Bi $_{2}$ Sr $_{1.6}$ La $_{0.4}$ CuO $_{6 + I^´}$ (Bi2201) and bilayer B…

cond-mat.str-el2006

Probing the gamma-alpha Transition in Bulk Ce under Pressure: A Direct Investigation by Resonant Inelastic X-ray Scattering

We report on the most complete investigation to date of the 4f-electron properties at the gamma-alpha transition in elemental Ce by resonant inelastic x-ray scattering (RIXS). The…

cond-mat.str-el2009

Evidence for Oxygen Holes due to d-p Rehybridization in Thermoelectric Sr_{1-x}Rh_{2}O_{4}

Y. Ishida, T. Baba, R. Eguchi +8

Soft-x-ray photoemission and absorption spectroscopies are employed to investigate the electronic structures of Sr_{1-x}Rh_{2}O_{4}. Similarly to the layered cobaltates such as Na_…

cond-mat.str-el2010

Electronic structure of an antiferromagnetic metal: CaCrO3

P. A. Bhobe, A. Chainani, M. Taguchi +11

We report on the electronic structure of the perovskite oxide CaCrO3 using valence-band, core-level, and Cr 2p - 3d resonant photoemission spectroscopy (PES). Despite its antiferro…

cond-mat.mtrl-sci2010

Nanoscale Dichotomy of Ti 3d Carriers Mediating the Ferromagnetism in Co:TiO2 Anatase Thin Films

T. Ohtsuki, A. Chainani, R. Eguchi +11

We study the surface and bulk electronic structure of the room-temperature ferromagnet Co:TiO2 anatase films using soft and hard x-ray photoemission spectroscopy with probe sensiti…

cond-mat.str-el2011

Kondo Resonance in PrTi2Al20: Photoemission spectroscopy and single-impurity Anderson model

M. Matsunami, M. Taguchi, A. Chainani +5

The Kondo resonance at the Fermi level is well-established for the electronic structure of Ce (f1 electron) and Yb (f1 hole) based systems. In this work, we report complementary ex…

cond-mat.str-el2005

Polarized resonant inelastic x-ray scattering as an ultra-fine probe of excited states in La2CuO4

A. Shukla, M. Calandra, M. Taguchi +3

X-ray absorption is the standard method to probe the unoccupied density of states at a given edge. Here we show that polarized Resonant Inelastic X-Ray Scattering in La2CuO4 at the…

cond-mat.str-el2005

Temperature dependent Eu 3d-4f X-ray Absorption and Resonant Photoemission Study of the Valence Transition in $E u N i_{2} (S i_{0.2} G e_{0.8})_{2}$

K. Yamamoto, K. Horiba, M. Taguchi +10

We study the mixed valence transition ( $T$ $_{v}$ $\sim$ 80 K) in EuNi $_{2}$ (Si $_{0.2}$ Ge $_{0.8}$ ) $_{2}$ using Eu 3 $d - 4 f$ X-ray absorption spectroscopy (XAS) and resonant photoemissi…

cond-mat.str-el2008

Photoemission evidence for a Mott-Hubbard metal-insulator transition in VO $_{2}$

R. Eguchi, M. Taguchi, M. Matsunami +15

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 $p - 3 d$ re…

cond-mat.mtrl-sci2004

Doping Dependent Changes in Nitrogen 2 $p$ States in the Diluted Magnetic Semiconductor Ga $_{1 - x}$ Cr $_{x}$ N

T. Takeuchi, Y. Harada, T. Tokushima +10

We study the electronic structure of the recently discovered diluted magnetic semiconductor Ga $_{1 - x}$ Cr $_{x}$ N ( $x$ = 0.01-0.10). A systematic study of the changes in the $occupie…

cond-mat.str-el2005

Bulk screening in core level photoemission from Mott-Hubbard and Charge-Transfer systems

M. Taguchi, A. Chainani, N. Kamakura +14

We report bulk-sensitive hard X-ray ( $h I^½$ = 5.95 KeV) core level photoemission spectroscopy (PES) of single crystal V $_{1.98}$ Cr $_{0.02}$ O $_{3}$ and the high- $T_{c}$ cuprate Bi $_{2}$ S…

Publications (35)

Fermi surfaces, electron-hole asymmetry and correlation kink in a three-dimensional Fermi liquid LaNiO3​

The T2K Experiment

Weak itinerant ferromagnetism in Heusler type Fe2VAl0.95

Evidence for suppressed metallicity on the surface of La2-xSrxCuO4 and Nd2-xCexCuO4

Measurements of the T2K neutrino beam properties using the INGRID on-axis near detector

Development of Multi-Pixel Photon Counters

Combining photoemission and optical spectroscopies for reliable valence determination in YbS and Yb metal

Oxygen on-site Coulomb energy in Pr1.3−x​La0.7​Cex​CuO4​ and Bi2​Sr2​CaCu2​O8+I^´​ and its relation with Heisenberg exchange

Strong valence fluctuation in the quantum critical heavy fermion superconductor beta-YbAlB4: A hard x-ray photoemission study

First Muon-Neutrino Disappearance Study with an Off-Axis Beam

Temperature-Dependence of Magnetically-Active Charge Excitations in Magnetite across the Verwey Transition

Unusual coexistence of negative/positive charge-transfer in mixed-valence Nax​Ca1−x​Cr2​O4​

Evidence for mass renormalization in LaNiO$"" sub 3_: an in situ soft x-ray photoemission study of epitaxial films

Electronic structure of semiconducting CeFe4​P12​: Strong hybridization and relevance of single-impurity Anderson model

Tensile-Strain Dependent Spin States in Epitaxial LaCoO3​ Thin Films

Evidence for a correlated insulator to antiferromagnetic metal transition in CrN

Bulk Electronic structure of Na0.35​CoO2​.1.3H2​O

Global structure of thermal tides in the upper cloud layer of Venus revealed by LIR onboard Akatsuki

Anomalous State Sandwiched between Fermi Liquid and Charge Ordered Mott-Insulating Phases of Ti4O7

Photoemission Evidence for Valence Fluctuations and Kondo Resonance in YbAl2

Coherent and Incoherent States of Electron-doped SrTiO3

Nature of Well-Screened State in Hard X-ray Mn 2p Core-Level Photoemission of La1−x​Srx​MnO3​ Films

Theoretical study of resonant x-ray emission spectroscopy of Mn films on Ag

Revisiting the valence-band and core-level photoemission spectra of NiO

Hard X-ray Cu 2p Core-Level Photoemission of High-Tc​ Cuprate Superconductors

Probing the gamma-alpha Transition in Bulk Ce under Pressure: A Direct Investigation by Resonant Inelastic X-ray Scattering

Evidence for Oxygen Holes due to d-p Rehybridization in Thermoelectric Sr_{1-x}Rh_{2}O_{4}

Electronic structure of an antiferromagnetic metal: CaCrO3

Nanoscale Dichotomy of Ti 3d Carriers Mediating the Ferromagnetism in Co:TiO2 Anatase Thin Films

Kondo Resonance in PrTi2Al20: Photoemission spectroscopy and single-impurity Anderson model

Polarized resonant inelastic x-ray scattering as an ultra-fine probe of excited states in La2CuO4

Temperature dependent Eu 3d-4f X-ray Absorption and Resonant Photoemission Study of the Valence Transition in EuNi2​(Si0.2​Ge0.8​)2​

Photoemission evidence for a Mott-Hubbard metal-insulator transition in VO2​

Doping Dependent Changes in Nitrogen 2p States in the Diluted Magnetic Semiconductor Ga1−x​Crx​N

Bulk screening in core level photoemission from Mott-Hubbard and Charge-Transfer systems

Fermi surfaces, electron-hole asymmetry and correlation kink in a three-dimensional Fermi liquid LaNiO $_{3}$

Oxygen on-site Coulomb energy in Pr $_{1.3 - x}$ La $_{0.7}$ Ce $_{x}$ CuO $_{4}$ and Bi $_{2}$ Sr $_{2}$ CaCu $_{2}$ O $_{8 + I^´}$ and its relation with Heisenberg exchange

Unusual coexistence of negative/positive charge-transfer in mixed-valence Na $_{x}$ Ca $_{1 - x}$ Cr $_{2}$ O $_{4}$

Electronic structure of semiconducting CeFe $_{4}$ P $_{12}$ : Strong hybridization and relevance of single-impurity Anderson model

Tensile-Strain Dependent Spin States in Epitaxial LaCoO $_{3}$ Thin Films

Bulk Electronic structure of Na $_{0.35}$ CoO $_{2}$ .1.3H $_{2}$ O

Nature of Well-Screened State in Hard X-ray Mn 2 $p$ Core-Level Photoemission of La $_{1 - x}$ Sr $_{x}$ MnO $_{3}$ Films

Hard X-ray Cu $2 p$ Core-Level Photoemission of High- $T_{c}$ Cuprate Superconductors

Temperature dependent Eu 3d-4f X-ray Absorption and Resonant Photoemission Study of the Valence Transition in $E u N i_{2} (S i_{0.2} G e_{0.8})_{2}$

Photoemission evidence for a Mott-Hubbard metal-insulator transition in VO $_{2}$

Doping Dependent Changes in Nitrogen 2 $p$ States in the Diluted Magnetic Semiconductor Ga $_{1 - x}$ Cr $_{x}$ N