Dramatic distortion of the 4d giant resonance by the C<sub>60</sub>fullerene shell
M. Ya. AmusiaA F Ioffe Physical-Technical Institute, St Petersburg 194021, RussiaA. S. BaltenkovArifov Institute of Electronics, Akademgorodok, 700125 Tashkent, UzbekistanЛ. В. ЧернышеваA F Ioffe Physical-Technical Institute, St Petersburg 194021, RussiaZ. FelfliDepartment of Physics and Center for Theoretical Studies of Physical Systems, Clark Atlanta University, Atlanta, GA 30314, USAA. Z. MsezaneDepartment of Physics and Center for Theoretical Studies of Physical Systems, Clark Atlanta University, Atlanta, GA 30314, USA
ABI
Abstract
The photoionization cross section for the endohedral Xe@C60 atom is investigated within the framework of representing the C60 by a delta-type potential. Results demonstrate that in Xe@C60, the 4d giant resonance is distorted significantly when compared with that of the isolated Xe atom. The reflection of the photoelectron waves by the C60 causes strong oscillations in the photoionization cross section resulting in the replacement of the Xe 4d giant resonance by four prominent peaks. The approximation of C60 by an infinitely thin real potential preserves reasonably well the sum rule for the 4d electrons but modifies the dipole polarizability of the 4d shell.
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