Metal-insulator transitions due to shallow donors in a GaAs/AlGaAs quantum well
Keywords: 71.55; 71.38; 71.30.+h; 73.40.Qv; 73.61.âr; 75.75.+a; 73.21.Hb; Metal-insulator transition; Quantum well systems; Impurity states; Diamagnetic susceptibility;