Single-electron transistor mediated by C60 insertion inside a carbon nanotube

Abstract

Electrical properties of C60 encapsulated peapod are investigated at various temperatures from room temperature down to T=1.8K. The current behavior induced by the applied gate and source-drain voltage shows that C60 peapods exhibit single-electron transistor properties. Gate-dependent conductance is enhanced at negative gate voltage and is suppressed and oscillate at positive gate voltage. This behavior is ascribed to the modulation of density of states by the insertion of C60s inside a carbon nanotube.