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Article

Intersubband magnetoplasmon as a detector of the spin polarization in two-dimensional electron system

JETP Letters. 2017. Vol. 105. No. 6. P. 380-383.

The magnetic field dynamics of intersubband collective excitations in two-dimensional electron systems based on Mg_xZn_{1−x}O/ZnO heterostructures is studied by the Raman scattering method. It is found that, upon the change in the spin polarization under conditions of the transition from the filling factor ν=2 to ν=1, the energy of the intersubband magnetoplasmon changes considerably. The performed theoretical analysis shows that this effect is attributed to the concomitant change in the exchange interaction in the excitation energy.