TWO-COMPONENT SUPERCONDUCTIVITY FOR DOPED FULLERENES

Abstract

The combining mechanism of the itinerant carrier pair and the local carrier pair (two-component model) is considered for doped fullerenes. The superconducting transition temperature T c , penetration depth λ, coherent length ξ, thermodynamic critical field H c and specific heat jump ΔC/T c are calculated and there is overall consistency between the calculations and the experiments for both alkali-metal-doped fullerenes ( Na 3 C 60, K 3 C 60, Rb 3 C 60 and RbCs 2 C 60) and alkaline-earth doped fullerenes ( Ba 6 C 60).