Abstract
Among the experimentally observed structures of molecular , our calculations show that the structure with symmetry is one of the two most energetically favorable. Based on this result and the fact that is conducive to forming a periodic system, we propose a new solid phase of carbon using fullerenes as a basis. Full structural relaxations and electronic density of states are evaluated using an ab initio pseudopotential plane wave method within the local density approximation. The calculated electron-phonon interaction potential is found to be substantially enhanced compared to , leading to the possibility of larger superconducting transition temperatures than in alkali-doped solids.
- Received 6 May 1997
DOI:https://doi.org/10.1103/PhysRevLett.81.697
©1998 American Physical Society