Sub-Kelvin transport spectroscopy of fullerene peapod quantum dots

Pawel Utko (1) , Jesper Nygård (1) , Marc Monthioux (2) , Laure Noé (2)

1 UCPH - University of Copenhagen = Københavns Universitet
2 CEMES-M3 - Matériaux Multi-fonctionnels et Multi-échelles

The authors have studied electrical transport properties of individual C60 fullerene peapods, i.e., single-wall carbon nanotubes encapsulating C60 molecules. Their measurements indicated power lawlike temperature dependencies of linear conductance similar to those for empty nanotubes. At temperatures below 30K, peapod devices behaved as highly regular individual quantum dots showing regular Coulomb blockade oscillations. Signatures of Kondo physics appeared at the lowest measurement temperature of 315mK.

Domaines: Science des matériaux [cond-mat.mtrl-sci]

Pawel Utko, Jesper Nygård, Marc Monthioux, Laure Noé. Sub-Kelvin transport spectroscopy of fullerene peapod quantum dots. Applied Physics Letters, 2006, 89 (23), pp.233118. ⟨10.1063/1.2403909⟩. ⟨hal-01764467⟩