Energy relaxation during hot-exciton transport in quantum wells: Direct observation by spatially resolved phonon-sideband spectroscopy

Zhao, Hui; Moehl, Sebastian; Kalt, Heinz

dc.contributor.author	Zhao, Hui
dc.contributor.author	Moehl, Sebastian
dc.contributor.author	Kalt, Heinz
dc.date.accessioned	2011-04-06T20:10:48Z
dc.date.available	2011-04-06T20:10:48Z
dc.date.issued	2002-10
dc.identifier.citation	Hui Zhao, S. Moehl, H. Kalt, Energy relaxation during hot-exciton transport in quantum wells: Direct observation by spatially resolved phonon-sideband spectroscopy, Appl. Phys. Lett. 81, 2794 (2002). http://link.aip.org/link/doi/10.1063/1.1512819
dc.identifier.uri	http://hdl.handle.net/1808/7358
dc.description	Permissions were not obtained for sharing the full text of this article. Full text is available from the American Institute of Physics and from arXiv. See links in this record.
dc.description.abstract	We investigate the energy relaxation of excitons during the real-space transport in ZnSe quantum wells by using microphotoluminescence with spatial resolution enhanced by a solid immersion lens. The spatial evolution of the LO-phonon sideband, originating from the LO-phonon assisted recombination of hot excitons, is measured directly. By calculating the LO-phonon assisted recombination probability, we obtain the nonthermal energy distribution of excitons and observe directly the energy relaxation of hot excitons during their transport. We find the excitons remain hot during their transport on a length scale of several micrometers. Thus, the excitonic transport on this scale cannot be described by classical diffusion.
dc.publisher	American Institute of Physics
dc.relation.hasversion	http://arxiv.org/abs/cond-mat/0205065v2
dc.subject	Strongly Correlated Electrons
dc.subject	Mesoscale and Nanoscale Physics
dc.title	Energy relaxation during hot-exciton transport in quantum wells: Direct observation by spatially resolved phonon-sideband spectroscopy
dc.type	Other
kusw.kuauthor	Zhao, Hui
kusw.kudepartment	Physics and Astronomy
kusw.oastatus	publisherdenied
dc.identifier.doi	10.1063/1.1512819
kusw.oapolicy	This item does not meet KU Open Access policy criteria. Publisher denied.
dc.rights.accessrights	openAccess

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