bei Google ScholarTitelangaben
Roszak, Katarzyna ; Machnikowski, Paweł ; Axt, Vollrath Martin ; Kuhn, Tilmann:
Spin decoherence of a confined exciton due to one‐ and two‐phonon assisted transitions.
In: Caldas, Marília J. ; Studart, Nelson
(Hrsg.):
Physics of semiconductors. -
Melville, NY
: American Inst. of Physics
,
2010
. - S. 413-414
. - (AIP Conference Proceedings
; 1199
)
ISBN 978-0-7354-0736-7
DOI: https://doi.org/10.1063/1.3295479
Abstract
Exciton spin decay in a self‐assembled InAs/GaAs quantum dot is studied. The spin relaxation results from an interplay of two factors: the Bir‐Pikus Hamiltonian and the short‐range exchange interaction, leading to one‐ and two‐phonon assisted transitions. We establish a hierarchy between the resulting transition rates; the one‐phonon assisted transition to dark states is the fastest process. We also show the dominating role of transverse phonons for all of the transitions.