2005/01/11 by B. Szafran, T. Chwiej, F. M. Peeters +2 · 2 citations
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.71.235305
published as Phys. Rev. B 71, 235305 (2005)
arxiv created 2005/01/11 · openalex publication_date 2005/06/06 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Binding energies of negative (X^\ensuremath-) and positive trions (X+) in quantum wires are studied for strong quantum confinement of carriers which results in a numerical exactly solvable model. The relative electron and hole confinement have a strong effect on the stability of trions. For equal hole and electron confinement, X+ is more stable but a small imbalance of the particle confinement towards a stronger hole confinement, e.g., due to its larger effective mass, leads to the interchange of X^\ensuremath- and X+ recombination lines in the photoluminescent spectrum as was recently observed experimentally. In case of larger X^\ensuremath- stability, a magnetic field oriented parallel to the wire axis leads to a stronger increase of the X+ binding energy resulting in a crossing of the X+ and X^\ensuremath- lines.