A. Shigemoto

Kondo Lattice Effects of YbAl3 Suggested by Temperature Dependence of High-Accuracy High-Energy Photoelectron Spectroscopy

By use of high-resolution soft X-rays, intrinsic temperature dependences of bulk Yb 4f photoelectron spectra were obtained for fractured surfaces of high-purity YbAl 3 single crystals. The spectra ...

Unraveling Genuine First Order Bulk Valence Transition and Kondo Resonance Behaviors in YbInCu4 by High Energy Photoelectron Spectroscopy

By combining the high resolution hard and soft X-ray photoelectron spectroscopy, the Yb 3d and 4f states in the strongly correlated electron system, YbInCu 4 , are studied. After high accuracy experimental determination of the four unknown physical quantities such as the valence values and thicknesses of the surface and sub-surface regions, genuine behaviors of the Kondo resonance as well as the electronic structures in the bulk and sub-surface are clarified. A clear first order valence transition in the bulk and a gradual valence change in the sub-surface region with temperature are revealed.

Charge dynamics in strongly correlated one-dimensional Cu-O chain systems revealed by inelastic x-ray scattering

We report on the Cu

Intrinsic correlated electronic structure of CrO2 revealed by hard x-ray photoemission spectroscopy

1s

Photoemission Spectroscopy and X-ray Absorption Spectroscopy Studies of the Superconducting Pyrochlore Oxide Cd2Re2O7

resonant inelastic x-ray scattering (RIXS) of Cu-O one-dimensional strongly correlated insulator systems with contrasting atomic arrangements, namely edge-sharing

High-energy angle-resolved photoemission spectroscopy probing bulk correlated electronic states in quasi-one-dimensional V 6 O 13 and Sr Cu O 2

{\mathrm{CuGeO}}_{3}

Bulk sensitive photoelectron spectroscopy with soft and hard X-rays : Soft X-ray ARPES toward high resolution HAXPES

and corner-sharing

Bulk electronic structures of n-type superconductor Nd1,85Ce0.15CuO4 probed by high energy angle-resolved photoemission spectroscopy

{\mathrm{Sr}}_{2}{\mathrm{CuO}}_{3}

High-resolution soft X-ray photoemission study of a Kondo semiconductor and related compounds

. Owing to good statistics of the high-resolution RIXS data, so far unresolved fine structures are revealed. Detailed photon-energy and momentum dependence of the RIXS spectra in comparison with theoretical calculations has clarified the natures of the low-energy charge excitations and hybridization of the electronic states.

Resonant inelastic X-ray scattering of Sr2CuO3

Bulk-sensitive hard x-ray photoemission spectroscopy (HAXPES) reveals for as-grown epitaxial films of half-metallic ferromagnetic CrO2(100) a pronounced screening feature in the Cr 2p3/2 core level and an asymmetry in the O 1s core level. This gives evidence of a finite, metal-type Fermi edge, which is surprisingly not observed in HAXPES. A spectral weight shift in HAXPES away from the Fermi energy is attributed to single-ion recoil effects due to high energy photoelectrons. In conjunction with inverse PES the intrinsic correlated Mott-Hubbard-type electronic structure is unravelled, yielding an averaged Coulomb correlation energy Uav ~ 3.2 eV.