Shell Filling and Exchange Coupling in Metallic Single-Walled Carbon Nanotubes
- 6 March 2002
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 88 (12) , 126801
- https://doi.org/10.1103/physrevlett.88.126801
Abstract
We report the characterization of electronic shell filling in metallic single-walled carbon nanotubes by low-temperature transport measurements. Nanotube quantum dots with average conductance approximately (1-2)e(2)/h exhibit a distinct four-electron periodicity for electron addition as well as signatures of Kondo and inelastic cotunneling. The Hartree-Fock parameters that govern the electronic structure of metallic nanotubes are determined from the analysis of transport data using a shell-filling model that incorporates the nanotube band structure and Coulomb and exchange interactions.Keywords
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