Publications (19)
X-ray Magnetic Circular Dichroism of Valence Fluctuating State in Eu at High Magnetic Fields
Y. H. Matsuda, Z. W. Ouyang, H. Nojiri +6
X-ray magnetic circular dichroism (XMCD) at the Eu L-edge (2p->5d) in two compounds exhibiting valence fluctuation, namely EuNi2(Si0.18Ge0.82)2 and EuNi2P2, has been investigated a…
Spin-lattice instability to a fractional magnetization state in the spinel HgCr2O4
M. Matsuda, H. Ueda, A. Kikkawa +6
Magnetic systems are fertile ground for the emergence of exotic states when the magnetic interactions cannot be satisfied simultaneously due to the topology of the lattice - a situ…
High field x-ray diffraction study on a magnetic-field-induced valence transition in YbInCu4
Y. H. Matsuda, T. Inami, K. Ohwada +6
We report the first high-field x-ray diffraction experiment using synchrotron x-rays and pulsed magnetic fields exceeding 30 T. Lattice deformation due to a magnetic-field-induced…
Momentum-resolved charge excitations in high-Tc cuprates studied by resonant inelastic x-ray scattering
K. Ishii, M. Hoesch, T. Inami +14
We report a Cu K-edge resonant inelastic x-ray scattering (RIXS) study of high-Tc cuprates. Momentum-resolved charge excitations in the CuO2 plane are examined from parent Mott ins…
The Gauge Hierarchy Problem and Higher Dimensional Gauge Theories
H. Hatanaka, T. Inami, C. S. Lim
We report on an attempt to solve the gauge hierarchy problem in the framework of higher dimensional gauge theories. Both classical Higgs mass and quadratically divergent quantum co…
Synchrotron X-ray Spectroscopy Study on the Valence State in alpha- and beta-YbAlB4 at Low Temperatures and High Magnetic Fields
Y. H. Matsuda, T. Nakamura, K. Kuga +5
The valence state of Yb ions in beta-YbAlB4 and its polymorph alpha-YbAlB4 has been investigated by using X-ray absorption and emission spectroscopy in SPring-8 at temperatures fro…
Change in lattice modulation upon gigantic magnetoelectric transition in GdMnO3 and TbMnO3
T. Arima, T. Goto, Y. Yamasaki +6
Single-crystal synchrotron x-ray diffraction measurements in strong magnetic fields have been performed for magnetoelectric compounds GdMnO3 and TbMnO3. It has been found that the…
Resonant inelastic x-ray scattering study of hole-doped manganites La1-xSrxMnO3 (x=0.2 and 0.4)
K. Ishii, T. Inami, K. Ohwada +8
Electronic excitations near the Fermi energy in the hole doped manganese oxides (La1-xSrxMnO3, x=0.2 and 0.4) have been elucidated by using the resonant inelastic x-ray scattering…
Bilepton production in electron-gamma collisions
D. V. Soa, T. Inami, H. N. Long
We study the production of bileptons, new gauge boson of lepton number two, in the minimal 3 - 3 - 1 model in high energy electron - photon collisions. If the bilepton masses are i…
Atomic displacements and lattice distortion in the magnetic-field-induced charge ordered state of SmRuP
T. Matsumura, S. Michimura, T. Inami +5
Structural properties of SmRuP in the anomalous magnetic ordered phase between K and K in magnetic fields has been studied by x-ray dif…
Polarization-analyzed resonant inelastic x-ray scattering of the orbital excitations in KCuF3
K. Ishii, S. Ishihara, Y. Murakami +13
We report a Cu K-edge resonant inelastic x-ray scattering (RIXS) study of orbital excitations in KCuF3 . By performing the polarization analysis of the scattered photons, we disclo…
Frustration-driven successive metamagnetic transitions in TbB4
T. Inami, K. Ohwada, Y. H. Matsuda +5
Resonant magnetic x-ray diffraction experiments on the Shastry-Sutherland lattice TbB were carried out under strong pulsed magnetic fields up to 30 T. TbB exhibits a multi-…
Suppression of f-Electron Itinerancy in CeRu2Si2 by a Strong Magnetic Field
Y. H. Matsuda, T. Nakamura, J. L. Her +4
The valence state of Ce in a canonical heavy fermion compound CeRu2Si2 has been investigated by synchrotron X-ray absorption spectroscopy at 1.8 K in high magnetic fields of up to…
Momentum Dependent Charge Excitations of Two-Leg Ladder: Resonant Inelastic X-ray Scattering of (La,Sr,Ca)14Cu24O41
K. Ishii, K. Tsutsui, T. Tohyama +8
Momentum dependent charge excitations of a two-leg ladder are investigated by resonant inelastic x-ray scattering of (La,Sr,Ca)14Cu24O41. In contrast to the case of a square lattic…
Magnetic ordering and fluctuation in kagome lattice antiferromagnets, Fe and Cr jarosites
M. Nishiyama, T. Morimoto, S. Maegawa +2
Jarosite family compounds, KFe_3(OH)_6(SO_4)_2, (abbreviate Fe jarosite), and KCr_3(OH)_6(SO_4)_2, (Cr jarosite), are typical examples of the Heisenberg antiferromagnet on the kago…
Mott gap excitations in twin-free YBa2Cu3O7-d (Tc = 93 K) studied by RIXS
K. Ishii, K. Tsutsui, Y. Endoh +9
Mott gap excitations in the high-Tc superconductor of the optimal doped YBa2Cu3O7-d (Tc = 93 K) have been studied by the resonant inelastic x-ray scattering method. Anisotropic spe…
Orbital excitations in CMR progenitor of LaMnO3 studied by resonant inelastic x-ray scattering
T. Inami, S. Ishihara, H. Kondo +8
We report resonant inelastic x-ray scattering experiments of the orbital ordered manganite LaMnO3. When the incident photon energy is tuned near the Mn K absorption edge, the spect…
Isotropic parallel antiferromagnetism in the magnetic-field-induced charge-ordered state of SmRuP caused by - hybridization
T. Matsumura, S. Michimura, T. Inami +12
Nature of the field-induced charge ordered phase (phase II) of SmRuP has been investigated by resonant x-ray diffraction (RXD) and polarized neutron diffraction (PND), f…
Momentum Dependence of Charge Excitations in the Electron-Doped Superconductor Nd1.85Ce0.15CuO4: a RIXS Study
K. Ishii, K. Tsutsui, Y. Endoh +9
We report a resonant inelastic x-ray scattering (RIXS) study of charge excitations in the electron-doped high-Tc superconductor Nd1.85Ce0.15CuO4. The intraband and interband excita…