Tunability of Raman spectral signatures by Rashba spin-orbit interaction in few-electron quantum dots

Abstract

The resonant inelastic light scattering from a GaAs quantum dot containing a few electrons is investigated theoretically in the presence of Rashba spin-orbit coupling. We show that the spin-orbit interaction results in additional Raman transitions in the dot, whose amplitudes can be controlled externally by varying the spin-orbit coupling parameter. This novel effect can be used to tune Raman transitions in quantum dots. Alternatively, Raman spectroscopy can be used to observe how Rashba spin-orbit coupling manifests in few-electron quantum dots.