An analytical expression is obtained for the energy of a quasi-two-dimensional electron-hole liquid (EHL) in shallow quantum wells. It is shown that in the Si/Si1–xGex/Si structures with small x, the EHL contains light and heavy holes. With increasing x, the transition of EHL to a state with heavy holes occurs, and the equilibrium density of electron-hole pairs strongly decreases. The effect of an external electric field on the EHL properties is studied.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 2, pp. 3–7, February, 2018.
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Vasilchenko, A.A., Kopytov, G.F. & Krivobok, V.S. Quasi-Two-Dimensional Electron–Hole Liquid in Shallow SiGe/Si Quantum Wells. Russ Phys J 61, 205–210 (2018). https://doi.org/10.1007/s11182-018-1386-6
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DOI: https://doi.org/10.1007/s11182-018-1386-6