Electron–electron correlations in carbon nanotubes

Sander J. Tans, Michel H. Devoret, Remco J. A. Groeneveld and Cees Dekker ()
Additional contact information
Sander J. Tans: Delft University of Technology
Michel H. Devoret: Delft University of Technology
Remco J. A. Groeneveld: Delft University of Technology
Cees Dekker: Delft University of Technology

Nature, 1998, vol. 394, issue 6695, 761-764

Abstract: Abstract Single-wall carbon nanotubes1,2 are ideally suited for electron-transport experiments on single molecules because they have a very robust atomic and electronic structure and are sufficiently long to allow electrical connections to lithographically defined metallic electrodes. The electrical transport properties of single nanotubes3 and bundles of nanotubes4 have so far been interpreted by assuming that individual electrons within the nanotube do not interact, an approximation that is often well justified for artificial mesoscopic devices such as semiconductor quantum dots5. Here we present transport spectroscopy data on an individual carbon nanotube that cannot be explained by using independent-particle models and simple shell-filling schemes. For example, electrons entering the nanotube in a low magnetic field are observed to all have the same spin direction, indicating spin polarization of the nanotube. Furthermore, even when the number of electrons on the nanotube is fixed, we find that variation of an applied gate voltage can significantly change the electronic spectrum of the nanotube and can induce spin flips. The experimental observations point to significant electron–electron correlations. We explain our results phenomenologically using a model that assumes that the capacitance of the nanotube depends on its many-body quantum state.

Date: 1998
References: Add references at CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.nature.com/articles/29494 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:nature:v:394:y:1998:i:6695:d:10.1038_29494

Ordering information: This journal article can be ordered from
https://www.nature.com/

DOI: 10.1038/29494

Access Statistics for this article

Nature is currently edited by Magdalena Skipper

More articles in Nature from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().