Photoionization of doped fullerenes

Photoionization of doped fullerene anions Coulomb confinement resonances 38... 

To date, since the photoelectron spectroscopy of doped fullerenes has been difficult to perform, numerous theoretical studies of photoionization spectra of atoms encaged in doped fullerenes, performed at various levels of approximations, [15-46], have been prevalent. Consequently, to aid emerging experiments and new theories on gas phase doped fullerenes, a review of the theoretical findings and predictions that have been accumulated in this area of research so far is very timely. This is precisely the aim of the present paper. 

An alternative simple modeling of doped fullerenes, specifically, A C6o, was developed initially in [34]. It was then used extensively in a number of photoionization studies of thus encaged atoms [34 41], The method is based on approximating the C60 cage by a spherical potential V(r) which differs from zero only within an infinitesimally thin wall of a sphere of radius RC/ the latter being considered the C60 radius, Rc = 6.639 au [47] ... 

Photoionization of doped giant single-walled and multiwalled fullerenes... 

The present paper has focused on novel systems, doped fullerenes, with the emphasis on their photoionization spectra. While the photoionization problem of gas phase doped fullerenes has been experimentally addressed only recently in pioneering works [12,13], there has been much more activity on the theoretical side of the problem this has far outstripped experiment. In the present paper, only those results obtained on the basis of simple semiem-pirical models, the A-potential [15,20-22,27-33,43,44] and 5-potential [34-41] models have been highlighted. Surprisingly, even within the framework of these simple models a rich variety of novel effects, particularly the confinement resonances and their manifestations in the photoionization spectra of doped fullerenes has been unraveled. Although the approximations made are indisputably reasonable for trusting the existence of, and trends in, the predicted confinement resonances, and thereby urging their experimental... 

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