@article{15406,
  abstract     = {We report on dynamic Shubnikov–de Haas (SdH) oscillations that are measured in the optical response, subterahertz transmittance of two-dimensional systems, and reveal two distinct types of oscillation nodes: “universal” nodes at integer ratios of radiation and cyclotron frequencies and “tunable” nodes at positions sensitive to all parameters of the structure. The nodes in both real and imaginary parts of the measured complex transmittance are analyzed using a dynamic version of the static Lifshitz-Kosevich formula. These results demonstrate that the node structure of the dynamic SdH oscillations provides an all-optical access to quantization- and interaction-induced renormalization effects, in addition to parameters one can obtain from the static SdH oscillations.},
  author       = {Savchenko, M. L. and Gospodarič, J. and Shuvaev, A. and Dmitriev, I. A. and Dziom, Vlad and Dobretsova, A. A. and Mikhailov, N. N. and Kvon, Z. D. and Pimenov, A.},
  issn         = {2643-1564},
  journal      = {Physical Review Research},
  number       = {2},
  publisher    = {American Physical Society},
  title        = {{Optical Shubnikov-de Haas oscillations in two-dimensional electron systems}},
  doi          = {10.1103/PhysRevResearch.6.L022027},
  volume       = {6},
  year         = {2024},
}

@article{11737,
  abstract     = {Spin-orbit coupling in thin HgTe quantum wells results in a relativistic-like electron band structure, making it a versatile solid state platform to observe and control nontrivial electrodynamic phenomena. Here we report an observation of universal terahertz (THz) transparency determined by fine-structure constant α≈1/137 in 6.5-nm-thick HgTe layer, close to the critical thickness separating phases with topologically different electronic band structure. Using THz spectroscopy in a magnetic field we obtain direct evidence of asymmetric spin splitting of the Dirac cone. This particle-hole asymmetry facilitates optical control of edge spin currents in the quantum wells.},
  author       = {Dziom, Uladzislau and Shuvaev, A. and Gospodarič, J. and Novik, E. G. and Dobretsova, A. A. and Mikhailov, N. N. and Kvon, Z. D. and Alpichshev, Zhanybek and Pimenov, A.},
  issn         = {2469-9969},
  journal      = {Physical Review B},
  number       = {4},
  publisher    = {American Physical Society},
  title        = {{Universal transparency and asymmetric spin splitting near the Dirac point in HgTe quantum wells}},
  doi          = {10.1103/PhysRevB.106.045302},
  volume       = {106},
  year         = {2022},
}

@article{12278,
  abstract     = {Mercury telluride (HgTe) thin films with a critical thickness of 6.5 nm are predicted to possess a gapless Dirac-like band structure. We report a comprehensive study on gated and optically doped samples by magnetooptical spectroscopy in the THz range. The quasi-classical analysis of the cyclotron resonance allowed the mapping of the band dispersion of Dirac charge carriers in a broad range of electron and hole doping. A smooth transition through the charge neutrality point between Dirac holes and electrons was observed. An additional peak coming from a second type of holes with an almost density-independent mass of around 0.04m0 was detected in the hole-doping range and attributed to an asymmetric spin splitting of the Dirac cone. Spectroscopic evidence for disorder-induced band energy fluctuations could not be detected in present cyclotron resonance experiments.},
  author       = {Shuvaev, Alexey and Dziom, Uladzislau and Gospodarič, Jan and Novik, Elena G. and Dobretsova, Alena A. and Mikhailov, Nikolay N. and Kvon, Ze Don and Pimenov, Andrei},
  issn         = {2079-4991},
  journal      = {Nanomaterials},
  keywords     = {General Materials Science, General Chemical Engineering},
  number       = {14},
  publisher    = {MDPI},
  title        = {{Band structure near the Dirac Point in HgTe quantum wells with critical thickness}},
  doi          = {10.3390/nano12142492},
  volume       = {12},
  year         = {2022},
}