Many-body origin of the "trion line"

M. Combescot; J. Tribollet; G. Karczewski; F. Bernardot; C. Testelin; M. Chamarro

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Many-body origin of the "trion line"

M. Combescot·J. Tribollet·G. Karczewski·F. Bernardot·C. Testelin·M. Chamarro

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Abstract

We show that the so-called "trion line" in the absorption spectrum of doped quantum wells, comes from a singular many-body object, intrinsically wide in energy: the photocreated virtual exciton dressed by Coulomb and Pauli interactions with the well carriers. This understanding is supported by the spectra of circular dichroism obtained with a spin-polarized Fermi sea: the sharp edge on the low-energy side and the significant tail at high energies are well explained by these many-body effects, not by bound 3-body trions.

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M. Combescot, J. Tribollet, G. Karczewski, F. Bernardot, C. Testelin, M. Chamarro. 2004-09-15. Many-body origin of the "trion line". https://arxiv.org/abs/cond-mat/0409395

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