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Correlated tunneling in intramolecular carbon nanotube quantum dots

Thorwart, M. and Grifoni, Milena and Cuniberti, Gianaurelio and Postma, H. and Dekker, Cees (2002) Correlated tunneling in intramolecular carbon nanotube quantum dots. Physical Review Letters 89 (19), p. 196402.

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Other URL: http://dx.doi.org/10.1103/PhysRevLett.89.196402

Abstract

We investigate correlated electronic transport in single-walled carbon nanotubes with two intramolecular tunneling barriers. We suggest that below a characteristic temperature the long-range nature of the Coulomb interaction becomes crucial to determine the temperature dependence of the maximum ${\it G}$_{max}$$ of the conductance peak. Correlated sequential tunneling dominates transport yielding the power law ${\it G}$_{max}$${\sim}$$_{end–end}$$ –1}$, typical for tunneling between the ends of two Luttinger liquids. Our predictions are in agreement with recent measurements. [brace not closed] [math mode missing closing $]