Plasmon mechanism of the trion emission band broadening in quantum wells

A.A. Klochikhin (1) , V.P. Kochereshko (1) , Lucien Besombes (2) , G. Karczewski (3) , T. Wojtowicz (3) , J. Kossut (3)

1 A.F. Ioffe Physical-Technical Institute
2 NEEL - NPSC - Nanophysique et Semiconducteurs
3 Institute of Physics

The effects of charge-density fluctuations on negative trion states in a quantum well are considered for the case of intermediate doping by electrons at zero magnetic field. The quasi-two-dimensionality of the system and the trion-plasmon interaction are taken into account in the framework of the random-phase approximation. It is shown that the trion luminescence band has a complex structure consisting of a zero-plasmon line and a trion-plasmon wing. The structure is interpreted as a result of spatial inhomogeneity of the quantum wells.

Domaines: Autre [cond-mat.other]

A.A. Klochikhin, V.P. Kochereshko, Lucien Besombes, G. Karczewski, T. Wojtowicz, et al.. Plasmon mechanism of the trion emission band broadening in quantum wells. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2011, 83, pp.235329. ⟨10.1103/PhysRevB.83.235329⟩. ⟨hal-00735861⟩