Resonant inelastic x-ray scattering spectra of BP calculated by the tight-binding method

The resonant inelastic soft-x-ray scattering (RIXS) spectra of boron phosphide (BP) crystal have been calculated by using the tight-binding (TB) approximation and compared with spectra obtained experimentally by Agui et al. It is shown that typical features observed in the experimental spectra of B K and P L2,3 emissions are well reproduced by the calculations based on the TB approximation with spd basis. The dependence of main peaks of both the spectra on the excitation energy is explained in terms of the band structure. (author)