Theoretical Aspects of the Field Induced Superconductivity in Polyacenes and C60
Abstract
The electronic structure and the superconductivity in field-doped polyacenes are considered. Within a modified Thomas-Fermi approach for typical experimental values of the surface charge density the injected charge is confined to a monolayer. The electron-phonon coupling constant for internal modes λintra is estimated using the work of Devos and Lanoo (Ref. 4) and the density of states N(0) estimated from a 2D tight-binding model derived from a full potential LDA band structure calculation for bulk anthracene. The empirical values of the Coulomb pseudopotentials are significantly enhanced. The strong Coulomb interaction is considered as a key quantity which determines the large differences in the critical temperatures achieved for n-doped polyacenes and C60.
- Publication:
-
International Journal of Modern Physics B
- Pub Date:
- 2002
- DOI:
- 10.1142/S0217979202011299
- Bibcode:
- 2002IJMPB..16.1547D