Large quantum rings in the ν > 1 quantum Hall regime

We study computationally the ground-state properties of large quantum rings in the filling-factor nu > 1 quantum Hall regime. We show that the arrangement of electrons into different Landau levels leads to clear signatures in the total energies as a function of the magnetic field. In this context, we discuss possible approximations for the filling factor. in the system. We are able to characterize integer-nu states in quantum rings in an analogy with conventional quantum Hall droplets. We also find a partially spin-polarized state between nu = 2 and 3. Despite the specific topology of a quantum ring, this state is strikingly reminiscent of the recently found nu = 5/2 state in a quantum dot.