Circularly polarized emission from ensembles of InAs/GaAs quantum dots

↓ Direkt till sidans innehåll
↓ Direkt till sidans sekundära innehåll (sidomenyn)

Sökning: WFRF:(Moskalenko Evgenii) > Circularly polarize...

LIBRIS Formathandbok (Information om MARC21)

Fältnamn	Indikatorer	Metadata
000		03207naa a2200337 4500
001		oai:DiVA.org:liu-69808
003		SwePub
008		110808s2011 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-698082 URI
024	7	a https://doi.org/10.1063/1.35998532 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 Circularly polarized emission from ensembles of InAs/GaAs quantum dots
264	1	b American Institute of Physics,c 2011
338		a electronic2 rdacarrier
500		a Original Publication: Evgenii Moskalenko, L.A. Larsson and Per-Olof Holtz, Circularly polarized emission from ensembles of InAs/GaAs quantum dots, 2011, Journal of Applied Physics, (110), 1, 013510. http://dx.doi.org/10.1063/1.3599853 Copyright: American Institute of Physics http://www.aip.org/
520		a We present a low-temperature micro-photoluminescence (mu-PL) study of ensembles of InAs/GaAs quantum dots (QDs) with respect to its circular polarization (rho(c)) for a manifold of experimental conditions such as single or dual laser excitation, different excitation energies (h upsilon(ex)), varying excitation powers (P(ex)) of both lasers, and with or without an external magnetic field (B(ext)). It is demonstrated that an essential rho(c) (less than= 40%) could be recorded depending on P(ex), even at B(ext) = 0 for h upsilon(ex) exceeding the PL energy of the wetting layer (E(WL)), while rho(c) remains negligible for h upsilon(ex) less than E(WL). To explain the data obtained, a model is developed according to which a nuclear magnetic field (B(N)) is created in the QDs by spin-polarized electrons. The B(N) plays a crucial role in the preservation of the electron spin, which otherwise effectively relaxes due to the presence of the anisotropic electron-hole exchange interaction (omega(ex)). The application of an additional infra-red laser gives rise to a population of excess holes in the QDs, thus producing positively charged excitons. In this case, omega(ex) = 0 and accordingly, rho(c) approximate to 40% at B(ext) = 0 is recorded, even for excitation with h upsilon(ex) less than E(WL).
653		a TECHNOLOGY
653		a TEKNIKVETENSKAP
700	1	a Larsson, L.A.u Linköpings universitet,Tekniska högskolan,Halvledarmaterial4 aut
700	1	a Holtz, Per-Olofu Linköpings universitet,Halvledarmaterial,Tekniska högskolan4 aut0 (Swepub:liu)perho67
710	2	a Linköpings universitetb Institutionen för fysik, kemi och biologi4 org
773	0	t Journal of Applied Physicsd : American Institute of Physicsg 110:1, s. 013510-q 110:1<013510-x 0021-8979x 1089-7550
856	4	u https://liu.diva-portal.org/smash/get/diva2:433555/FULLTEXT01.pdfx primaryx Raw objecty fulltext:print
856	4	u http://liu.diva-portal.org/smash/get/diva2:433555/FULLTEXT01
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-69808
856	4 8	u https://doi.org/10.1063/1.3599853

Hitta via bibliotek

Journal of Applied Physics (Sök värdpublikationen i LIBRIS)

Till lärosätets databas

Hitta mer i SwePub

Av författaren/redakt...: Moskalenko, Evge ...; Larsson, L.A.; Holtz, Per-Olof

Artiklar i publikationen: Journal of Appli ...

Av lärosätet: Linköpings universitet

Sök utanför SwePub

Sök vidare i:: Google; Google Book Search; Google Scholar

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

LIBRIS.kb.se