22 citations · 81 across the 6 of their papers we have counts for
6 papers
Anisotropy of Resonant Inelastic X-Ray Scattering at the K Edge of Si:Theoretical Analysis
Yunori Nisikawa, Manabu Usuda, Jun-ichi Igarashi
We investigate theoretically the resonant inelastic x-ray scattering (RIXS) at the edge of Si on the basis of an ab initio calculation. We calculate the RIXS spectra with syste…
Possible Pairing Symmetry of Superconductor Na_xCoO_2yH_2O
Yunori Nisikawa, Hiroaki Ikeda, Kosaku Yamada
To discuss a possibility that the superconductivities in Na_xCoO_2yH_2O are induced by the electron correlation, we investigate the possible pairing symmetry based on the single-ba…
Resonant Inelastic X-Ray Scattering at the K Edge of Ge
Yunori Nisikawa, Manabu Usuda, Jun-ichi Igarashi +2
We study the resonant inelastic x-ray scattering (RIXS) at the edge of Ge. We measure RIXS spectra with systematically varying momenta in the final state. The spectra are a mea…
A Mechanism of Spin-Triplet Superconductivity in Hubbard Model on Triangular La ttice: Application to UNi_2Al_3
Yunori Nisikawa, Kosaku Yamada
We discuss the possibility of spin-triplet superconductivity in a two-dimensional Hubbard model on a triangular lattice within the third-order perturbation theory. When we vary the…
Perturbation Theory on the Superconductivity of Heavy Fermion Superconductors CeIr_{x}Co_{1-x}In_5
Yunori Nisikawa, Hiroaki Ikeda, Kosaku Yamada
We reformulate the Eliashberg's equation for the superconducting transition within the quasi-particle description, which takes account of the heavy electron mass. We discuss the su…
Perturbation Theory on the Superconductivity of Heavy Fermion Superconductor UPd_2Al_3
Yunori Nisikawa, Kosaku Yamada
We investigate the superconducting mechanism and the transition temperature of heav y fermion superconductor UPd_2Al_3 on the basis of a single band two-dimensional Hubbard model o…