Abstract
It is demonstrated that the copper-doped high-quality Bi Se single crystals with a high density of bulk charge carriers are certainly 3D topological insulators. The analysis of quantum Shubnikov−de Haas (SdH) oscillations reveals that these materials simultaneously exhibit two types of such oscillations determined by the Landau levels related to both the 3D and 2D Fermi surfaces.
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Original Russian Text © S.I. Vedeneev, 2016, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2016, Vol. 104, No. 12, pp. 871–874.
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Vedeneev, S.I. On the berry phase in quantum oscillations observed in 3D topological insulators. Jetp Lett. 104, 864–867 (2016). https://doi.org/10.1134/S0021364016240140
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DOI: https://doi.org/10.1134/S0021364016240140