77 citations · 351 across the 14 of their papers we have counts for
14 papers
Variation of Pressure-Induced Valence Transition with Approximation Degree in Yb-Based Quasicrystalline Approximants
Keiichiro Imura, Yuki Yoneyama, Hideyuki Ando +6
We have synthesized new Tsai-type Yb-based intermediate-valence approximant crystals (ACs) with different degree of approximation to quasicrystal, Zn--Au--Yb 1/1 and 2/1 AC, and st…
Robustness of superconductivity to external pressure in high-entropy-alloy-type metal telluride AgInSnPbBiTe5
Md. Riad Kasem, Yuki Nakahira, Hitoshi Yamaoka +7
High-entropy-alloy (HEA) superconductors are a new class of disordered superconductors. In this study, we investigate the robustness of superconducting states in HEA-type metal tel…
Quantum Monte Carlo Compton profiles of solid and liquid lithium
Yubo Yang, Nozomu Hiraoka, Kazuhiro Matsuda +2
We computed the Compton profile of solid and liquid lithium using quantum Monte Carlo (QMC) and compared with recent experimental measurements obtaining good agreement. Importantly…
Magnetic circular dichroism in hard x-ray Raman scattering as a probe of local spin polarization
Manabu Takahashi, Nozomu Hiraoka
We argue that the magnetic circular dichroism (MCD) of the hard x-ray Raman scattering (XRS) could be used as an element selective probe of local spin polarization. The magnitude o…
Kondo-induced giant isotropic negative thermal expansion
D. G. Mazzone, M. Dzero, M. Abeykoon +9
Negative thermal expansion is an unusual phenomenon appearing in only a handful of materials, but pursuit and mastery of the phenomenon holds great promise for applications across…
Pressure-induced collapse of spin-orbital Mott state in the hyperhoneycomb iridate -LiIrO
T. Takayama, A. Krajewska, A. S. Gibbs +8
Hyperhoneycomb iridate -LiIrO is a three-dimensional analogue of two-dimensional honeycomb iridates, such as -LiIrO, which recently appeared as another playgr…
Origin of Pressure-induced Superconducting Phase in KFeSe studied by Synchrotron X-ray Diffraction and Spectroscopy
Yoshiya Yamamoto, Hitoshi Yamaoka, Masashi Tanaka +12
Pressure dependence of the electronic and crystal structures of KFeSe, which has pressure-induced two superconducting domes of SC I and SC II, was investigated…
Quantitative study of the f occupation in CeMIn5 and other cerium compounds with hard x-rays
M. Sundermann, F. Strigari, T. Willers +19
We present bulk-sensitive hard x-ray photoelectron spectroscopy (HAXPES) data of the Ce3d core levels and lifetime-reduced L edge x-ray absorption spectroscopy (XAS) in the partial…
Unified understanding of the valence transition in the rare-earth monochalcogenides under pressure
Ignace Jarrige, Hitoshi Yamaoka, Jean-Pascal Rueff +10
Valence instability is a key ingredient of the unusual properties of f electron materials, yet a clear understanding is lacking as it involves a complex interplay between f electro…
Determining the in-plane orientation of the ground-state orbital of CeCu2Si2
T. Willers, F. Strigari, N. Hiraoka +9
We have successfully determined the hitherto unknown sign of the B44 Stevens crystal-field parameter of the tetragonal heavy-fermion compound CeCu2Si2 using vector q dependent non-…
High pressure evolution of FeO electronic structure revealed by X-ray absorption
Shibing Wang, Wendy L. Mao, Adam P. Sorini +9
We report the first high pressure measurement of the Fe K-edge in hematite (FeO) by X-ray absorption spectroscopy in partial fluorescence yield geometry. The pressure-induc…
Anomalous Angular Dependence of the Dynamic Structure Factor near Bragg Reflections: Graphite
R. Hambach, C. Giorgetti, N. Hiraoka +5
The electron energy-loss function of graphite is studied for momentum transfers q beyond the first Brillouin zone. We find that near Bragg reflections the spectra can change drasti…
Resonant inelastic x-ray scattering in single-crystal superconducting PrFeAsO0.7
I. Jarrige, K. Ishii, M. Yoshida +9
Resonant inelastic x-ray scattering (RIXS) spectra at the Fe K-edge were measured for a single crystal of the iron oxypnictide superconductor PrFeAsO0.7 (Tc=42 K). They disclose a…
High-resolution inelastic X-ray scattering studies of the state-resolved differential cross-section of Compton excitations in helium atoms
B. P. Xie, L. F. Zhu, K. Yang +7
The state-resolved differential cross sections for both the 1s2 1S0 - 1s2s 1S0 monopolar transition and the 1s2 1S0 - 1s2p 1P1 dipolar transition of atomic helium have been measure…