Semiconducting carbon nanotube quantum dots: Calculation of the interacting electron states by exact diagonalisation

Mervyn Roy, P. A. Maksym
2009 Europhysics letters  
In semiconducting carbon nanotube quantum dots that contain a few interacting electrons the electron-electron correlation is always important. The states of up to 6 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.
doi:10.1209/0295-5075/86/37001 fatcat:rd3cg53r6ba5ta5idkkqc4zfkq