Diffusion Monte Carlo calculations of circular quantum dots in presence of Rashba spin orbit interaction

We performed a quantum Monte Carlo study of a quasi-two-dimensional quantum dot built on a semiconductor quantum well, including the effects of structure inversion asymmetry (SIA) modeled by a Rashba interaction. The quantum dot is in turn modeled as a system of N interacting electrons confined by a parabolic potential of strength ω0. We studied the interplay between the strength of the Rashba interaction and ω0 in determining the addition energies of the system. We also analyzed the SIA effects on the one-body density and spin-density both for the case of a closed-shell and open-shell dot. In the last case we confirm the prediction of the formation of spin textures.