Evidence of nonadiabatic exciton-phonon interaction probed by second-order LO-phonon replicas of single quantum dots

Evidence of nonadiabatic exciton-phonon interaction probed by second-order LO-phonon replicas of single quantum dots

In this experimental study of single InGaAs/GaAs quantum dots (QDs) the photoluminescence intensity of the second order LO-phonon replica of the excitonic interband recombination was measured along with the intensities of the first and zeroth orders. The results show that the intensity of the second...

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Bibliographic Details
Main Authors: Dufåker, Daniel, Fredrik, Karlsson, Mereni, L O., Dimastrodonato, V, Juska, G, Pelucchi, E, Holtz, Per-Olof
Format: Others
Language:English
Published: Linköpings universitet, Halvledarmaterial 2013
Subjects:
TECHNOLOGY
TEKNIKVETENSKAP
Online Access:http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-90677
Description
Summary:In this experimental study of single InGaAs/GaAs quantum dots (QDs) the photoluminescence intensity of the second order LO-phonon replica of the excitonic interband recombination was measured along with the intensities of the first and zeroth orders. The results show that the intensity of the second-order replica is three to four times stronger than expected from the adiabatic Huang-Rhys theory, indicating that the neglected nonadiabaticity plays an important role for the understanding of the exciton-phonon coupling in QDs. === <p>Funding Agencies|Science Foundation Ireland|05/IN.1/I2510/IN.1/I3000|Swedish Research Council (VR)||K. A. Wallenberg Foundation||Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University (Faculty Grant SFO-Mat-LiU)|2009-00971|</p>

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