Inelastic Neutron Scattering Studies on the Crystal Field Excitations in Superconducting NdFeAsO_0.85F_0.15

Figure 2

(a) Energy spectra of CF excitations in at  K after subtracting the phonon and instrument background. The spectra were well fitted by seven Gaussian peaks. The instrumental energy resolution is 0.98 meV at elastic position (horizontal bar). (b) Comparison of the energy spectra of CF excitations between  K and  K after subtracting the phonon and instrument background. The black lines are guides to the eye.

(a)

(b)