Dynamical T-matrix theory for high-density excitons in coupled quantum wells
| dc.creator | Zimmermann, R. | |
| dc.date | 2006-02-25 | |
| dc.date.accessioned | 2026-07-07T07:01:57Z | |
| dc.date.available | 2026-07-07T07:01:57Z | |
| dc.description | Excitons in coupled quantum wells open the possibility to reach high densities close to equilibrium. In a recent experiment employing a lateral trap potential, a blue shift and a broadening of the exciton emission line has been seen (Snoke, SSC 134). The standard Hartree-Fock treatment can explain the blue shift but fails to give a finite broadening. Starting from the (spin-dependent) many-exciton Hamiltonian with direct and exchange potential, we present a dynamical T-matrix calculation for the single-exciton Green's function which is directly related to the frequency- and angle-resolved photoluminescence. The calculated spectrum is blue shifted and broadened due to exciton-exciton scattering. At high excitation, both the spectrum and the angular emission are getting narrow. This is a direct manifestation for off-diagonal long range order and a precursor of condensation. | |
| dc.description | 7 pages, 3 figures. Proceedings NOEKS 8 (Muenster 2006) | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0602601 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0602601 | |
| dc.identifier | phys. stat. sol. (b) 243, 2358 (2006) | |
| dc.identifier | doi:10.1002/pssb.200668040 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/108441 | |
| dc.subject | Other Condensed Matter | |
| dc.subject | Materials Science | |
| dc.title | Dynamical T-matrix theory for high-density excitons in coupled quantum wells | |
| dc.type | text |