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- Title
Optical properties of wedge-shaped quantum dots under Rashba spin-orbit interaction.
- Authors
Khordad, R.
- Abstract
In the present paper, the optical properties of a GaAs wedge-shaped quantum dot (QD) under the effect of Rashba spin-orbit interaction (SOI) are theoretically studied. For this purpose, we have used analytical expressions for optical properties obtained by the compact-density matrix formalism. The dependence of the optical absorption coefficients and refractive index changes on the strength of Rashba SOI for different angles and different radii of wedge-shaped QD has been studied. According to the obtained results, it is found that (i) the Rashba SOI does not have considerable effects on the refractive index changes maxima. (ii) The total absorption coefficient is increased and shifted towards higher energies with considering the Rashba SOI. (iii) The influence of Rashba SOI on the optical properties depends on the parameters such as apex angle and radius of the wedge-shaped QD.
- Subjects
OPTICAL properties of quantum dots; RASHBA effect; LIGHT absorption; OPTICAL properties of semiconductors; ENERGY bands
- Publication
International Journal of Modern Physics B: Condensed Matter Physics; Statistical Physics; Applied Physics, 2017, Vol 31, Issue 8, p-1
- ISSN
0217-9792
- Publication type
Article
- DOI
10.1142/S0217979217500552