| Issue |
EPL
Volume 86, Number 3, May 2009
|
|
|---|---|---|
| Article Number | 37001 | |
| Number of page(s) | 5 | |
| Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
| DOI | https://doi.org/10.1209/0295-5075/86/37001 | |
| Published online | 07 May 2009 | |
Semiconducting carbon nanotube quantum dots: Calculation of the interacting electron states by exact diagonalisation
Department of Physics and Astronomy, University of Leicester - University Road, Leicester LE1 7RH, UK, EU
Corresponding author: mr6@le.ac.uk
Received:
30
October
2008
Accepted:
2
April
2009
In semiconducting carbon nanotube quantum dots that contain a few interacting electrons the electron-electron correlation is always important. The states of up to six interacting electrons in such a dot are calculated by exact diagonalisation of a 2-band, effective mass Hamiltonian. The addition energy and the few-electron density are investigated for a wide range of dots with different physical properties and, in a large proportion of these dots, the electrons are found to form Wigner molecules.
PACS: 73.63.Fg – Nanotubes / 73.21.La – Quantum dots / 73.23.Hk – Coulomb blockade; single-electron tunneling
© EPLA, 2009
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