Resonant X-Ray Scattering from the Quadrupolar Ordering Phase of CeB_6

Details Resonant X-Ray Scattering from the Quadrupolar Ordering Phase of CeB_6 Resonant X-Ray Scattering from the Quadrupolar Ordering Phase of CeB_6

2001-07-18

arxiv.org/abs/cond-mat/0107377v1

J. Phys. Soc. Jpn. 70 (2001) 2892.

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures

Scientific paper

10.1143/JPSJ.70.2892

We theoretically investigate the origin of the resonant x-ray scattering (RXS) signal near the Ce $L_{III}$ absorption edge in the quadrupolar ordering phase of CeB$_6$, considering the intersite interaction between the $\Gamma_8$ states in the initial state. The anisotropic charge distribution of the $4f$ states modulates the $5d$ states through the intra-atomic Coulomb interaction and thereby generates a large RXS superlattice intensity. The temperature and magnetic field dependence indicates that the induced dipolar and octupolar orders have little influence on the RXS spectra, in good agreement with the recent experiment.

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