Comparative Magneto-Photoluminescence Study of Ensembles and of Individual InAs Quantum Dots

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Fältnamn	Indikatorer	Metadata
000		02756naa a2200337 4500
001		oai:DiVA.org:liu-16615
003		SwePub
008		090206s2009 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-166152 URI
024	7	a https://doi.org/10.1021/nl803148q2 DOI
040		a (SwePub)liu
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Moskalenko, Evgeniiu Linköpings universitet,Institutionen för fysik, kemi och biologi,Tekniska högskolan4 aut0 (Swepub:liu)evgmo15
245	1 0	a Comparative Magneto-Photoluminescence Study of Ensembles and of Individual InAs Quantum Dots
264	1	b American Chemical Society (ACS),c 2009
338		a print2 rdacarrier
520		a We report on magneto-photoluminescence studies of InAs/GaAs quantum dots (QDs) of considerably different densities, from dense ensembles down to individual dots. It is found that a magnetic field applied in Faraday geometry decreases the photoluminescence (PL) intensity of OD ensembles, which is not accompanied by the corresponding increase of PL signal of the wetting layer on which ON are grown. The model suggested to explain these data assumes considerably different strengths of suppression of electron and hole fluxes by a magnetic field. This idea has been successfully checked in experiments on individual ON, where the PL spectra allow to directly monitor the charge state of a OD and, hence, to conclude about relative magnitudes of electron and hole fluxes toward the QD. Comparative studies of different individual QDs have revealed that the internal electric field in the sample (which was altered in the experiments in a controllable way) together with an external magnetic field will determine the charge state and emission intensity of the QDs.
653		a NATURAL SCIENCES
653		a NATURVETENSKAP
700	1	a Larsson, Arvidu Linköpings universitet,Halvledarmaterial,Tekniska högskolan4 aut0 (Swepub:liu)arvla97
700	1	a Larsson, Matsu Linköpings universitet,Halvledarmaterial,Tekniska högskolan4 aut0 (Swepub:liu)matla70
700	1	a Holtz, Per-Olofu Linköpings universitet,Halvledarmaterial,Tekniska högskolan4 aut0 (Swepub:liu)perho67
700	1	a Schoenfeld, Winston Vu University of California, USA4 aut
700	1	a Petroff, Pierre Mu University of California, USA4 aut
710	2	a Linköpings universitetb Institutionen för fysik, kemi och biologi4 org
773	0	t Nano letters (Print)d : American Chemical Society (ACS)g 9:1, s. 353-359q 9:1<353-359x 1530-6984x 1530-6992
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-16615
856	4 8	u https://doi.org/10.1021/nl803148q

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Av författaren/redakt...: Moskalenko, Evge ...; Larsson, Arvid; Larsson, Mats; Holtz, Per-Olof; Schoenfeld, Wins ...; Petroff, Pierre ...

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Av lärosätet: Linköpings universitet

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