Abstract

Low-temperature magneto-transport and magneto-photoluminescence measurements are reported in magnetic two-dimensional electron gas samples formed by modulation doping shallow (Zn,Cd,Mn)Se single quantum wells. The small Fermi energy (∼1–2 meV) and large exchange-induced spin splitting (∼10 meV) results in a completely spin-polarized electron gas at filling factors as high as ν=12. Further, the spin splitting significantly perturbs the confinement potential, resulting in a magnetic field-dependent carrier density.

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