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Multicomponent Structure of an Electron-Hole Liquid in Shallow SiGe/Si Quantum Wells

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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

The fine structure of the emission spectrum lines is studied for a quasi-two-dimensional electronhole liquid (EHL) embedded in SiGe/Si quantum wells. It is shown that the patterns observed in the spectra of the two-particle (IR band) and four-particle (visible band) recombination can be explained by the presence of both heavy and light holes in the condensed phase. Comparison of the experimental data and calculated photoluminescence spectra of EHL allow determination of its main parameters, e.g., the equilibrium density, work function for pairs of particles, and light hole–heavy hole splitting at the G-point of the Brillouin zone for quantum wells that are 3.7–5.1% Ge.

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Authors and Affiliations

  1. Lebedev Physical Institute, Russian Academy of Sciences, Moscow, 119333, Russia

    S. N. Nikolaev, V. S. Bagaev, V. S. Krivobok, E. T. Davletov & A. S. Gulyashko

  2. Kuban State University, Krasnodar, 350040, Russia

    G. F. Kopytov & A. A. Vasil’chenko

  3. Kuban State Technological University, Krasnodar, 350042, Russia

    G. F. Kopytov & A. A. Vasil’chenko

Authors
  1. S. N. Nikolaev
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  2. V. S. Bagaev
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  3. V. S. Krivobok
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  4. E. T. Davletov
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  5. A. S. Gulyashko
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  6. G. F. Kopytov
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  7. A. A. Vasil’chenko
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Corresponding author

Correspondence to V. S. Krivobok.

Additional information

Original Russian Text © S.N. Nikolaev, V.S. Bagaev, V.S. Krivobok, E.T. Davletov, A.S. Gulyashko, G.F. Kopytov, A.A. Vasil’chenko, 2018, published in Izvestiya Rossiiskoi Akademii Nauk, Seriya Fizicheskaya, 2018, Vol. 82, No. 4.

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Nikolaev, S.N., Bagaev, V.S., Krivobok, V.S. et al. Multicomponent Structure of an Electron-Hole Liquid in Shallow SiGe/Si Quantum Wells. Bull. Russ. Acad. Sci. Phys. 82, 427–430 (2018). https://doi.org/10.3103/S1062873818040135

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  • DOI: https://doi.org/10.3103/S1062873818040135

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