Abstract
Shubnikov–de Haas oscillations in Hg1-x Cd x Te/HgTe/Hg1-x Cd x Te structures with the widths of a well of 16 and 20 nm have been investigated in tilted magnetic fields. The spin-to-orbital splitting ratio in the conduction band has been found in a wide range of electron densities. The magnitude and density dependence of the ratio agree fairly well with the calculations of the spectrum in the 8-band kP model. It has been shown that the effective g factor is anisotropic, g || < g ┴. The anisotropy is very high at low densities but decreases rapidly with an increase in the density, approaching unity at n e = (3−4) × 1011 cm-2.
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Original Russian Text © G.M. Min’kov, O.E. Rut, A.A. Sherstobitov, S.A. Dvoretskii, N.N. Mikhailov, 2016, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2016, Vol. 104, No. 4, pp. 241–247.
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Min’kov, G.M., Rut, O.E., Sherstobitov, A.A. et al. Zeeman splitting of the conduction band of HgTe quantum wells with a semimetallic spectrum. Jetp Lett. 104, 241–247 (2016). https://doi.org/10.1134/S0021364016160098
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DOI: https://doi.org/10.1134/S0021364016160098