69 citations · 840 across the 52 of their papers we have counts for
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Resonant x-ray scattering spectra from multipole orderings: Np M_{4,5} edges in NpO2
Tatsuya Nagao, Jun-ichi Igarashi
We study resonant x-ray scattering (RXS) at Np M_{4,5} edges in the triple-\textbf{k} multipole ordering phase in NpO_{2}, on the basis of a localized electron model. We derive an…
4p states and X-Ray Spectroscopy
Jun-ichi Igarashi, Manabu Takahashi
The 4p states in transition metals and their compounds usually play minor roles on their physical quantities. Recent development of resonant x-ray scattering (RXS) at the K-edge of…
Charge dynamics in strongly correlated one-dimensional Cu-O chain systems revealed by inelastic X-ray scattering
S. Suga, S. Imada, A. Higashiya +11
We report on the Cu 1s resonant inelastic X-ray scattering (RIXS) of Cu-O one-dimensional (1D) strongly correlated insulator systems with contrasting atomic arrangements, namely ed…
1/S-expansion study of spin waves in a two-dimensional Heisenberg antiferromagnet
Jun-ichi Igarashi, Tatsuya Nagao
We study the effects of quantum fluctuations on excitation spectra in the two-dimensional Heisenberg antiferromagnet by means of the 1/S expansion. We calculate the spin-wave dispe…