Skip to main content

Evolution of transport regimes in carbon nanotube quantum dots.

Publication ,  Journal Article
Makarovski, A; Liu, J; Finkelstein, G
Published in: Physical review letters
August 2007

We study the evolution of conductance regimes in carbon nanotubes with doubly degenerate orbitals (shells) by controlling the contact transparency within the same sample. For sufficiently open contacts, Kondo behavior is observed for 1, 2, and 3 electrons in the topmost shell. As the contacts are opened more, the sample enters the "mixed valence" regime, where different charge states are strongly hybridized by electron tunneling. Here, the conductance as a function of gate voltage shows pronounced modulations with a period of four electrons, and all single-electron features are washed away at low temperature. We successfully describe this behavior by a simple formula with no fitting parameters. Finally, we find a surprisingly small energy scale that controls the temperature evolution of conductance and the tunneling density of states in the mixed valence regime.

Duke Scholars

Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

August 2007

Volume

99

Issue

6

Start / End Page

066801

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Makarovski, A., Liu, J., & Finkelstein, G. (2007). Evolution of transport regimes in carbon nanotube quantum dots. Physical Review Letters, 99(6), 066801. https://doi.org/10.1103/physrevlett.99.066801
Makarovski, A., J. Liu, and G. Finkelstein. “Evolution of transport regimes in carbon nanotube quantum dots.Physical Review Letters 99, no. 6 (August 2007): 066801. https://doi.org/10.1103/physrevlett.99.066801.
Makarovski A, Liu J, Finkelstein G. Evolution of transport regimes in carbon nanotube quantum dots. Physical review letters. 2007 Aug;99(6):066801.
Makarovski, A., et al. “Evolution of transport regimes in carbon nanotube quantum dots.Physical Review Letters, vol. 99, no. 6, Aug. 2007, p. 066801. Epmc, doi:10.1103/physrevlett.99.066801.
Makarovski A, Liu J, Finkelstein G. Evolution of transport regimes in carbon nanotube quantum dots. Physical review letters. 2007 Aug;99(6):066801.

Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

August 2007

Volume

99

Issue

6

Start / End Page

066801

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences