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arXiv · 1808.04554

Three-particle electron-hole complexes in two-dimensional electron systems

V. A. Kuznetsov·L. V. Kulik·M. D. Velikanov·A. S. Zhuravlev·A. V. Gorbunov·S. Schmult·I. V. Kukushkin
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Abstract

Three-particle complexes consisting of two holes in the completely filled zero electron Landau level and an excited electron in the unoccupied first Landau level are investigated in a quantum Hall insulator. The distinctive features of these three-particle complexes are an electron-hole mass symmetry and the small energy gap of the quantum Hall insulator itself. Theoretical calculations of the trion energy spectrum in a quantizing magnetic field predict that, besides the ground state, trions feature a hierarchy of excited bound states. In agreement with the theoretical simulations, we observe new photoluminescence lines related to the excited trion states. A relatively small energy gap allows the binding of three-particle complexes with magnetoplasma oscillations and formation of plasmarons. The plasmaron properties are investigated experimentally.

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V. A. Kuznetsov, L. V. Kulik, M. D. Velikanov, A. S. Zhuravlev, A. V. Gorbunov, S. Schmult, I. V. Kukushkin. 2018-08-14. Three-particle electron-hole complexes in two-dimensional electron systems. https://doi.org/10.1103/physrevb.98.205303

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