Effects of thickness on the spin susceptibility of the 2D electron gas
  Using available quantum Monte Carlo predictions for a strictly 2D electron gas, we have estimated the spin susceptibility of electrons in actual devices taking into account the effect of the finite transverse thickness and finding a very good agreement with experiments. A weak disorder, as found in very clean devices and/or at densities not too low, just brings about a minor enhancement of the susceptibility. 
S. De Palo, M. Botti, S. Moroni, and Gaetano Senatore