Abstract
The results of the longitudinal and Hall magnetoresistivity measurements in the Shubnikov - de Haas oscillation regime for the HgCdTe/HgTe/HgCdTe heterostructures with a wide (20.3 nm) HgTe quantum well are presented. An anomalous phase shift of magneto-oscillations is detected in the region of spin-unsplit peaks in contradiction with a conventional situation in 2D systems. It is shown that the observed features are associated with the inverted nature of the spectrum in the size-quantized H1 subband of the investigated HgTe quantum well. The results obtained are compared with the phase shift effects of both the magneto-oscillations and plateaus of the quantum Hall effect in monolayer graphene and in semimagnetic HgMnTe quantum wells.
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