Size effects on excitons in nano-rings
arXiv:cond-mat/0009044 · doi:10.1088/0953-8984/12/43/304
Abstract
The size effects of an exciton in a nano-ring are investigated theoretically by using an effective-mass Hamiltonian which can be separated in terms of the center-of-mass and relative coordinates. The binding energy and oscillator strength of the ground state are calculated for two different ring radii as a function of the ring width. The resulting linear optical susceptibility of the low-lying exciton states is also discussed.
4 pages, 4 figures, accepted by J. Phys: Condens. Matter