Zeeman Splitting of Electron Spectrum in HgTe Quantum Wells Near the Dirac Point
- Authors: Germanenko A.V.1, Minkov G.M.1,2, Sherstobitov A.A.1,2, Rut O.E.1, Dvoretski S.A.3, Mikhailov N.N.3
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Affiliations:
- School of Natural Sciences and Mathematics
- Institute of Metal Physics Russian Academy of Sciences
- Institute of Semiconductor Physics Russian Academy of Sciences
- Issue: Vol 52, No 4 (2018)
- Pages: 519-522
- Section: XXV International Symposium “Nanostructures: Physics and Technology”, Saint Petersburg, June 26–30, 2017. Quantum Wells, Quantum Wires, Quantum Dots, and Band Structure
- URL: https://journals.rcsi.science/1063-7826/article/view/202904
- DOI: https://doi.org/10.1134/S1063782618040152
- ID: 202904
Cite item
Abstract
The Zeeman splitting of the conduction band in the HgTe quantum wells both with normal and inverted spectrum has been studied experimentally in a wide electron density range. The simultaneous analysis of the Shubnikov–de Haas oscillations in low magnetic fields at different tilt angles and of the shape of the oscillations in moderate magnetic fields gives a possibility to find the ratio of the Zeeman splitting to the orbital one and anisotropy of g-factor. It is shown that the ratios of the Zeeman splitting to the orbital one are close to each other for both types of structures, with a normal and inverted spectrum and they are close enough to the values calculated within kP method. In contrast, the values of g-factor anisotropy in the structures with normal and inverted spectra are strongly different and for both cases differ significantly from the calculated ones. We assume that such disagreement with calculations is a result of the interface inversion asymmetry in the HgTe quantum well, which is not taken into account in the kP calculations.
About the authors
A. V. Germanenko
School of Natural Sciences and Mathematics
Author for correspondence.
Email: alexander.germanenko@urfu.ru
Russian Federation, Ekaterinburg, 620002
G. M. Minkov
School of Natural Sciences and Mathematics; Institute of Metal Physics Russian Academy of Sciences
Email: alexander.germanenko@urfu.ru
Russian Federation, Ekaterinburg, 620002; Ekaterinburg, 620990
A. A. Sherstobitov
School of Natural Sciences and Mathematics; Institute of Metal Physics Russian Academy of Sciences
Email: alexander.germanenko@urfu.ru
Russian Federation, Ekaterinburg, 620002; Ekaterinburg, 620990
O. E. Rut
School of Natural Sciences and Mathematics
Email: alexander.germanenko@urfu.ru
Russian Federation, Ekaterinburg, 620002
S. A. Dvoretski
Institute of Semiconductor Physics Russian Academy of Sciences
Email: alexander.germanenko@urfu.ru
Russian Federation, Novosibirsk, 630090
N. N. Mikhailov
Institute of Semiconductor Physics Russian Academy of Sciences
Email: alexander.germanenko@urfu.ru
Russian Federation, Novosibirsk, 630090