Masashi Sugiyama, Tsuyoshi Idé, et al.
Machine Learning
We theoretically study polarization and momentum-transfer dependence in Cu 4pσ-1s resonant X-ray emission spectra (RXES) of Nd2CuO4 with exact diagonalization techniques, developing our previous report [T. Idé and A. Kotani, J. Phys. Soc. Jpn. 68 (3999) 3100]. We explain the experimental polarization and angular dependence of a charge-transfer excitation about 5.7 eV above the ground state. Comparing results calculated with single- and multi-Cu models, we confirm the essential contribution of the nonlocal screening effect in Cu 4pσ-1s RXES, together with the configuration dependence of d-p hybridization. We predict considerable dependence of a CT excitation at about 2 eV on momentum transfer along the CuO2 planes, and the 5.7 eV excitation has less dependence.
Masashi Sugiyama, Tsuyoshi Idé, et al.
Machine Learning
Tsuyoshi Idé, Ankush Khandelwal, et al.
ICDM 2016
Tsuyoshi Idé, Hidetoshi Numata, et al.
Journal of the Society for Information Display
Georgios Kollias, Vasileios Kalantzis, et al.
AAAI 2022