Size effects on excitons in nano-rings

Details Size effects on excitons in nano-rings Size effects on excitons in nano-rings

2000-09-04

arxiv.org/abs/cond-mat/0009044v2

J. Phys : Condensed Matter 12, 9145 (2000)

Physics

Condensed Matter

Materials Science

4 pages, 4 figures, accepted by J. Phys: Condens. Matter

Scientific paper

10.1088/0953-8984/12/43/304

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.

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