Electron-Phonon Interactions in C${}_{28}$-derived Molecular Solids

Abstract

We present {\it ab initio} density-functional calculations of molecular solids formed from C${}_{28}$-derived closed-shell fullerenes. Solid C${}_{28}$H${}_4$ is found to bind weakly and exhibits many of the electronic structure features of solid C${}_{60}$ with an enhanced electron-phonon interaction potential. We show that chemical doping of this structure is feasible, albeit more restrictive than its C${}_{60}$ counterpart, with an estimated superconducting transition temperature exceeding those of the alkali-doped C${}_{60}$ solids.

Lower quality postscript file for Figure 1 is used in the manuscript in order to meet submission quota for pre-print server. Higher quality postscript file available from author: [email protected] This article has been updated to reflect changes incorporated during the peer review process. It is published in PRB 70, 140504(R) 2004