ELECTRON-PHONON INTERACTIONS IN SOLID C-36

Among the experimentally observed structures of molecular C-36, OUT ca lculations show that the structure with D-6h symmetry is one of the tw o most energetically favorable. Based on this result and the fact that D-6h is conducive to forming a periodic system, we propose a new soli d phase of carbon using C-36 fullerenes as a basis. Full structural re laxations and electronic density of states are evaluated using an ab i nitio pseudopotential plane wave method within the local density appro ximation. The calculated electron-phonon interaction potential is foun d to be substantially enhanced compared to C-60, leading to the possib ility of larger superconducting transition temperatures than in alkali -doped C-60 solids.