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Journal Articles

Split Fermi surface properties in Ulmannite NiSbS and PdBiSe with the cubic chiral crystal structure

Kakihana, Masashi*; Teruya, Atsushi*; Nishimura, Kengo*; Nakamura, Ai*; Takeuchi, Tetsuya*; Haga, Yoshinori; Harima, Hisatomo*; Hedo, Masato*; Nakama, Takao*; Onuki, Yoshichika

Journal of the Physical Society of Japan, 84(9), p.094711_1 - 094711_8, 2015/09

 Times Cited Count:13 Percentile:70.14(Physics, Multidisciplinary)

Journal Articles

X-ray magnetic circular dichroism at the ${it K}$ edge of Mn$$_{3}$$GaC

Takahashi, Manabu*; Igarashi, Junichi

Physical Review B, 67(24), p.245104_1 - 245104_5, 2003/06

 Times Cited Count:23 Percentile:72(Materials Science, Multidisciplinary)

We theoretically investigate the origin of the X-ray magnetic circular dichroism (XMCD) spectra at the K edge of Mn and Ga in the ferromagnetic phase of Mn$$_{3}$$GaC on the basis of an ab initio calculation. Taking account of the spin-orbit interaction in the LDA scheme, we obtain the XMCD spectra in excellent agreement with the recent experiment. We have analyzed the origin of each structure, and thus elucidated the mechanism of inducing the orbital polarization in the p symmetric states. We also discuss a simple sum rule connecting the XMCD spectra with the orbital moment in the p symmetric states.

Journal Articles

Magnetic resonant X-ray scattering in KCuF$$_{3}$$

Takahashi, Manabu*; Usuda, Manabu; Igarashi, Junichi

Physical Review B, 67(6), p.064425_1 - 064425_7, 2003/02

 Times Cited Count:21 Percentile:69.61(Materials Science, Multidisciplinary)

We study the magnetic resonant X-ray scattering (RXS) spectra around the K edge of Cu in KCuF$$_{3}$$ on the basis of an ab initio calculation. We use the full-potential linearlized augumented plane wave method in the LDA+U scheme, and introduce the lattice distortion as inputs of the calculation. We obtain finite intensity on magnetic superlattice spots by taking account of the spin-orbit interaction. We also calculate the RXS intensity on orbital superlattice spots. It is found that the intensity increases with increasing Jahn-Teller distortion.

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