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Paper detail

Dark exciton optical spectroscopy of a semiconducting quantum dot embedded in a nanowire

Photoluminescence of a single CdSe quantum dot embedded in a ZnSe nanowire has been investigated. It has been found that the dark exciton has a strong influence on the optical properties. The most visible influence is the strongly reduced excitonic emission compared to the biexcitonic one. Temperature dependent lifetime measurements have allowed us to measure a large splitting of $ΔE = 6 $ meV between the dark and the bright exciton as well as the spin flip rates between these two states.

preprint2009arXivOpen access
Gregory SallenAdrien TribuThomas AicheleRégis AndréLucien BesombesCatherine Bougerol-ChailloutSerge TatarenkoKuntheak KhengJean-Philippe Poizat
cond-mat.mtrl-sci
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Gregory SallenAdrien TribuThomas AicheleRégis AndréLucien BesombesCatherine Bougerol-ChailloutSerge TatarenkoKuntheak KhengJean-Philippe Poizat

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