Mixing of discrete and continuum excitations induced by nonperturbative Coulomb‐correlations

Title data

Axt, Vollrath M. ; Wühr, J. ; Kuhn, Tilmann:
Mixing of discrete and continuum excitations induced by nonperturbative Coulomb‐correlations.
In: Menéndez, José ; van de Walle, Chris G. (ed.): Physics of Semiconductors : 27th International Conference on the Physics of Semiconductors (ICPS-27), Flagstaff, Arizona, 26 -30 July 2004. Vol. 2. - Melville, New York : American Institute of Physics (AIP) , 2005 . - pp. 883-884 . - (AIP Conference Proceedings ; 772 )
ISBN 0-7354-0257-4
DOI: https://doi.org/10.1063/1.1994389

Project information

Abstract in another language

Taking into account all types of two‐pair coherences we have calculated four‐wave‐mixing (FWM) spectra emitted from a quantum wire for excitation conditions where excitons and free electron‐hole pairs are simultaneously excited. The spectra exhibit a mixing of discrete and continuous emissions which is shown to indicate nonperturbative Coulomb correlations. The line shapes are found to depend sensitively on the central frequency, the strength of the interaction as well as on the delay between the pulses.