Spectral Functions of Metallic Fullerene Polymers: A Theoretical Tool for Atomic Structures Identification

In this study, we investigated the spectral functions of quasi-one-dimensional electronic systems realized in metallic fullerene polymers theoretically. We applied the multichannel bosonization method to the electronic band structures derived from two different atomic models of fullerene polymers. Both the obtained analytical formulation and numerical calculations revealed significant differences between the two models in the energy dependence of the spectral functions, despite the slight difference in their atomic arrangement. These results indicate that the precise atomic arrangement of synthesized fullerene polymers can be determined using spectral function data obtained by angle-resolved photoemission spectroscopy.