Theory of electronic light scattering in lateral superlattices with Rashba spin-orbit coupling under quantizing electric and magnetic fields

The influence of an in-plane electric and out-of-plane magnetic field on the electronic light scattering is calculated for a lateral semiconductor superlattice within Rashba spin-orbit interaction. Sharp resonances are predicted to appear when the Raman shift matches one frequency of the Wannier-Stark ladder. The spin-orbit interaction gives rise to a dispersion of the exact one-particle eigenstates and an associated finite width of the Raman line, which can be tuned by the electric and magnetic field. When the Bloch frequency is located in this Raman line, a Fano resonance is observed.